diff --git a/integration/__init__.py b/integration/__init__.py
new file mode 100644
index 000000000..58fbe1b85
--- /dev/null
+++ b/integration/__init__.py
@@ -0,0 +1 @@
+"""Package for integration tests."""
diff --git a/integration/test_client_storage.py b/integration/test_client_storage.py
new file mode 100644
index 000000000..fd0290f22
--- /dev/null
+++ b/integration/test_client_storage.py
@@ -0,0 +1,515 @@
+"""Integration tests for client side storage."""
+from __future__ import annotations
+
+import time
+from typing import Generator
+
+import pytest
+from selenium.webdriver.common.by import By
+from selenium.webdriver.remote.webdriver import WebDriver
+
+from reflex.testing import AppHarness
+
+from . import utils
+
+
+def ClientSide():
+    """App for testing client-side state."""
+    import reflex as rx
+
+    class ClientSideState(rx.State):
+        state_var: str = ""
+        input_value: str = ""
+
+        @rx.var
+        def token(self) -> str:
+            return self.get_token()
+
+    class ClientSideSubState(ClientSideState):
+        # cookies with default settings
+        c1: str = rx.Cookie()
+        c2: rx.Cookie = "c2 default"  # type: ignore
+
+        # cookies with custom settings
+        c3: str = rx.Cookie(max_age=2)  # expires after 2 second
+        c4: rx.Cookie = rx.Cookie(same_site="strict")
+        c5: str = rx.Cookie(path="/foo/")  # only accessible on `/foo/`
+        c6: str = rx.Cookie(name="c6")
+        c7: str = rx.Cookie("c7 default")
+
+        # local storage with default settings
+        l1: str = rx.LocalStorage()
+        l2: rx.LocalStorage = "l2 default"  # type: ignore
+
+        # local storage with custom settings
+        l3: str = rx.LocalStorage(name="l3")
+        l4: str = rx.LocalStorage("l4 default")
+
+        def set_var(self):
+            setattr(self, self.state_var, self.input_value)
+            self.state_var = self.input_value = ""
+
+    class ClientSideSubSubState(ClientSideSubState):
+        c1s: str = rx.Cookie()
+        l1s: str = rx.LocalStorage()
+
+        def set_var(self):
+            setattr(self, self.state_var, self.input_value)
+            self.state_var = self.input_value = ""
+
+    def index():
+        return rx.fragment(
+            rx.input(value=ClientSideState.token, is_read_only=True, id="token"),
+            rx.input(
+                placeholder="state var",
+                value=ClientSideState.state_var,
+                on_change=ClientSideState.set_state_var,  # type: ignore
+                id="state_var",
+            ),
+            rx.input(
+                placeholder="input value",
+                value=ClientSideState.input_value,
+                on_change=ClientSideState.set_input_value,  # type: ignore
+                id="input_value",
+            ),
+            rx.button(
+                "Set ClientSideSubState",
+                on_click=ClientSideSubState.set_var,
+                id="set_sub_state",
+            ),
+            rx.button(
+                "Set ClientSideSubSubState",
+                on_click=ClientSideSubSubState.set_var,
+                id="set_sub_sub_state",
+            ),
+            rx.box(ClientSideSubState.c1, id="c1"),
+            rx.box(ClientSideSubState.c2, id="c2"),
+            rx.box(ClientSideSubState.c3, id="c3"),
+            rx.box(ClientSideSubState.c4, id="c4"),
+            rx.box(ClientSideSubState.c5, id="c5"),
+            rx.box(ClientSideSubState.c6, id="c6"),
+            rx.box(ClientSideSubState.c7, id="c7"),
+            rx.box(ClientSideSubState.l1, id="l1"),
+            rx.box(ClientSideSubState.l2, id="l2"),
+            rx.box(ClientSideSubState.l3, id="l3"),
+            rx.box(ClientSideSubState.l4, id="l4"),
+            rx.box(ClientSideSubSubState.c1s, id="c1s"),
+            rx.box(ClientSideSubSubState.l1s, id="l1s"),
+        )
+
+    app = rx.App(state=ClientSideState)
+    app.add_page(index)
+    app.add_page(index, route="/foo")
+    app.compile()
+
+
+@pytest.fixture(scope="session")
+def client_side(tmp_path_factory) -> Generator[AppHarness, None, None]:
+    """Start ClientSide app at tmp_path via AppHarness.
+
+    Args:
+        tmp_path_factory: pytest tmp_path_factory fixture
+
+    Yields:
+        running AppHarness instance
+    """
+    with AppHarness.create(
+        root=tmp_path_factory.mktemp("client_side"),
+        app_source=ClientSide,  # type: ignore
+    ) as harness:
+        yield harness
+
+
+@pytest.fixture
+def driver(client_side: AppHarness) -> Generator[WebDriver, None, None]:
+    """Get an instance of the browser open to the client_side app.
+
+    Args:
+        client_side: harness for ClientSide app
+
+    Yields:
+        WebDriver instance.
+    """
+    assert client_side.app_instance is not None, "app is not running"
+    driver = client_side.frontend()
+    try:
+        assert client_side.poll_for_clients()
+        yield driver
+    finally:
+        driver.quit()
+
+
+@pytest.fixture()
+def local_storage(driver: WebDriver) -> Generator[utils.LocalStorage, None, None]:
+    """Get an instance of the local storage helper.
+
+    Args:
+        driver: WebDriver instance.
+
+    Yields:
+        Local storage helper.
+    """
+    ls = utils.LocalStorage(driver)
+    yield ls
+    ls.clear()
+
+
+@pytest.fixture(autouse=True)
+def delete_all_cookies(driver: WebDriver) -> Generator[None, None, None]:
+    """Delete all cookies after each test.
+
+    Args:
+        driver: WebDriver instance.
+
+    Yields:
+        None
+    """
+    yield
+    driver.delete_all_cookies()
+
+
+def test_client_side_state(
+    client_side: AppHarness, driver: WebDriver, local_storage: utils.LocalStorage
+):
+    """Test client side state.
+
+    Args:
+        client_side: harness for ClientSide app.
+        driver: WebDriver instance.
+        local_storage: Local storage helper.
+    """
+    assert client_side.app_instance is not None
+    assert client_side.frontend_url is not None
+    token_input = driver.find_element(By.ID, "token")
+    assert token_input
+
+    # wait for the backend connection to send the token
+    token = client_side.poll_for_value(token_input)
+    assert token is not None
+
+    backend_state = client_side.app_instance.state_manager.states[token]
+
+    # get a reference to the cookie manipulation form
+    state_var_input = driver.find_element(By.ID, "state_var")
+    input_value_input = driver.find_element(By.ID, "input_value")
+    set_sub_state_button = driver.find_element(By.ID, "set_sub_state")
+    set_sub_sub_state_button = driver.find_element(By.ID, "set_sub_sub_state")
+
+    # get a reference to all cookie and local storage elements
+    c1 = driver.find_element(By.ID, "c1")
+    c2 = driver.find_element(By.ID, "c2")
+    c3 = driver.find_element(By.ID, "c3")
+    c4 = driver.find_element(By.ID, "c4")
+    c5 = driver.find_element(By.ID, "c5")
+    c6 = driver.find_element(By.ID, "c6")
+    c7 = driver.find_element(By.ID, "c7")
+    l1 = driver.find_element(By.ID, "l1")
+    l2 = driver.find_element(By.ID, "l2")
+    l3 = driver.find_element(By.ID, "l3")
+    l4 = driver.find_element(By.ID, "l4")
+    c1s = driver.find_element(By.ID, "c1s")
+    l1s = driver.find_element(By.ID, "l1s")
+
+    # assert on defaults where present
+    assert c1.text == ""
+    assert c2.text == "c2 default"
+    assert c3.text == ""
+    assert c4.text == ""
+    assert c5.text == ""
+    assert c6.text == ""
+    assert c7.text == "c7 default"
+    assert l1.text == ""
+    assert l2.text == "l2 default"
+    assert l3.text == ""
+    assert l4.text == "l4 default"
+    assert c1s.text == ""
+    assert l1s.text == ""
+
+    # no cookies should be set yet!
+    assert not driver.get_cookies()
+    local_storage_items = local_storage.items()
+    local_storage_items.pop("chakra-ui-color-mode", None)
+    assert not local_storage_items
+
+    # set some cookies and local storage values
+    state_var_input.send_keys("c1")
+    input_value_input.send_keys("c1 value")
+    set_sub_state_button.click()
+    state_var_input.send_keys("c2")
+    input_value_input.send_keys("c2 value")
+    set_sub_state_button.click()
+    state_var_input.send_keys("c3")
+    input_value_input.send_keys("c3 value")
+    set_sub_state_button.click()
+    state_var_input.send_keys("c4")
+    input_value_input.send_keys("c4 value")
+    set_sub_state_button.click()
+    state_var_input.send_keys("c5")
+    input_value_input.send_keys("c5 value")
+    set_sub_state_button.click()
+    state_var_input.send_keys("c6")
+    input_value_input.send_keys("c6 value")
+    set_sub_state_button.click()
+    state_var_input.send_keys("c7")
+    input_value_input.send_keys("c7 value")
+    set_sub_state_button.click()
+
+    state_var_input.send_keys("l1")
+    input_value_input.send_keys("l1 value")
+    set_sub_state_button.click()
+    state_var_input.send_keys("l2")
+    input_value_input.send_keys("l2 value")
+    set_sub_state_button.click()
+    state_var_input.send_keys("l3")
+    input_value_input.send_keys("l3 value")
+    set_sub_state_button.click()
+    state_var_input.send_keys("l4")
+    input_value_input.send_keys("l4 value")
+    set_sub_state_button.click()
+
+    state_var_input.send_keys("c1s")
+    input_value_input.send_keys("c1s value")
+    set_sub_sub_state_button.click()
+    state_var_input.send_keys("l1s")
+    input_value_input.send_keys("l1s value")
+    set_sub_sub_state_button.click()
+
+    cookies = {cookie_info["name"]: cookie_info for cookie_info in driver.get_cookies()}
+    assert cookies.pop("client_side_state.client_side_sub_state.c1") == {
+        "domain": "localhost",
+        "httpOnly": False,
+        "name": "client_side_state.client_side_sub_state.c1",
+        "path": "/",
+        "sameSite": "Lax",
+        "secure": False,
+        "value": "c1%20value",
+    }
+    assert cookies.pop("client_side_state.client_side_sub_state.c2") == {
+        "domain": "localhost",
+        "httpOnly": False,
+        "name": "client_side_state.client_side_sub_state.c2",
+        "path": "/",
+        "sameSite": "Lax",
+        "secure": False,
+        "value": "c2%20value",
+    }
+    c3_cookie = cookies.pop("client_side_state.client_side_sub_state.c3")
+    assert c3_cookie.pop("expiry") is not None
+    assert c3_cookie == {
+        "domain": "localhost",
+        "httpOnly": False,
+        "name": "client_side_state.client_side_sub_state.c3",
+        "path": "/",
+        "sameSite": "Lax",
+        "secure": False,
+        "value": "c3%20value",
+    }
+    assert cookies.pop("client_side_state.client_side_sub_state.c4") == {
+        "domain": "localhost",
+        "httpOnly": False,
+        "name": "client_side_state.client_side_sub_state.c4",
+        "path": "/",
+        "sameSite": "Strict",
+        "secure": False,
+        "value": "c4%20value",
+    }
+    assert cookies.pop("c6") == {
+        "domain": "localhost",
+        "httpOnly": False,
+        "name": "c6",
+        "path": "/",
+        "sameSite": "Lax",
+        "secure": False,
+        "value": "c6%20value",
+    }
+    assert cookies.pop("client_side_state.client_side_sub_state.c7") == {
+        "domain": "localhost",
+        "httpOnly": False,
+        "name": "client_side_state.client_side_sub_state.c7",
+        "path": "/",
+        "sameSite": "Lax",
+        "secure": False,
+        "value": "c7%20value",
+    }
+    assert cookies.pop(
+        "client_side_state.client_side_sub_state.client_side_sub_sub_state.c1s"
+    ) == {
+        "domain": "localhost",
+        "httpOnly": False,
+        "name": "client_side_state.client_side_sub_state.client_side_sub_sub_state.c1s",
+        "path": "/",
+        "sameSite": "Lax",
+        "secure": False,
+        "value": "c1s%20value",
+    }
+    # assert all cookies have been popped for this page
+    assert not cookies
+    time.sleep(2)  # wait for c3 to expire
+    assert "client_side_state.client_side_sub_state.c3" not in {
+        cookie_info["name"] for cookie_info in driver.get_cookies()
+    }
+
+    local_storage_items = local_storage.items()
+    local_storage_items.pop("chakra-ui-color-mode", None)
+    assert (
+        local_storage_items.pop("client_side_state.client_side_sub_state.l1")
+        == "l1 value"
+    )
+    assert (
+        local_storage_items.pop("client_side_state.client_side_sub_state.l2")
+        == "l2 value"
+    )
+    assert local_storage_items.pop("l3") == "l3 value"
+    assert (
+        local_storage_items.pop("client_side_state.client_side_sub_state.l4")
+        == "l4 value"
+    )
+    assert (
+        local_storage_items.pop(
+            "client_side_state.client_side_sub_state.client_side_sub_sub_state.l1s"
+        )
+        == "l1s value"
+    )
+    assert not local_storage_items
+
+    assert c1.text == "c1 value"
+    assert c2.text == "c2 value"
+    assert c3.text == "c3 value"
+    assert c4.text == "c4 value"
+    assert c5.text == "c5 value"
+    assert c6.text == "c6 value"
+    assert c7.text == "c7 value"
+    assert l1.text == "l1 value"
+    assert l2.text == "l2 value"
+    assert l3.text == "l3 value"
+    assert l4.text == "l4 value"
+    assert c1s.text == "c1s value"
+    assert l1s.text == "l1s value"
+
+    # navigate to the /foo route
+    with utils.poll_for_navigation(driver):
+        driver.get(client_side.frontend_url + "/foo")
+
+    # get new references to all cookie and local storage elements
+    c1 = driver.find_element(By.ID, "c1")
+    c2 = driver.find_element(By.ID, "c2")
+    c3 = driver.find_element(By.ID, "c3")
+    c4 = driver.find_element(By.ID, "c4")
+    c5 = driver.find_element(By.ID, "c5")
+    c6 = driver.find_element(By.ID, "c6")
+    c7 = driver.find_element(By.ID, "c7")
+    l1 = driver.find_element(By.ID, "l1")
+    l2 = driver.find_element(By.ID, "l2")
+    l3 = driver.find_element(By.ID, "l3")
+    l4 = driver.find_element(By.ID, "l4")
+    c1s = driver.find_element(By.ID, "c1s")
+    l1s = driver.find_element(By.ID, "l1s")
+
+    assert c1.text == "c1 value"
+    assert c2.text == "c2 value"
+    assert c3.text == ""  # cookie expired so value removed from state
+    assert c4.text == "c4 value"
+    assert c5.text == "c5 value"
+    assert c6.text == "c6 value"
+    assert c7.text == "c7 value"
+    assert l1.text == "l1 value"
+    assert l2.text == "l2 value"
+    assert l3.text == "l3 value"
+    assert l4.text == "l4 value"
+    assert c1s.text == "c1s value"
+    assert l1s.text == "l1s value"
+
+    # reset the backend state to force refresh from client storage
+    backend_state.reset()
+    driver.refresh()
+
+    # wait for the backend connection to send the token (again)
+    token_input = driver.find_element(By.ID, "token")
+    assert token_input
+    token = client_side.poll_for_value(token_input)
+    assert token is not None
+
+    # get new references to all cookie and local storage elements (again)
+    c1 = driver.find_element(By.ID, "c1")
+    c2 = driver.find_element(By.ID, "c2")
+    c3 = driver.find_element(By.ID, "c3")
+    c4 = driver.find_element(By.ID, "c4")
+    c5 = driver.find_element(By.ID, "c5")
+    c6 = driver.find_element(By.ID, "c6")
+    c7 = driver.find_element(By.ID, "c7")
+    l1 = driver.find_element(By.ID, "l1")
+    l2 = driver.find_element(By.ID, "l2")
+    l3 = driver.find_element(By.ID, "l3")
+    l4 = driver.find_element(By.ID, "l4")
+    c1s = driver.find_element(By.ID, "c1s")
+    l1s = driver.find_element(By.ID, "l1s")
+
+    assert c1.text == "c1 value"
+    assert c2.text == "c2 value"
+    assert c3.text == ""  # temporary cookie expired after reset state!
+    assert c4.text == "c4 value"
+    assert c5.text == "c5 value"
+    assert c6.text == "c6 value"
+    assert c7.text == "c7 value"
+    assert l1.text == "l1 value"
+    assert l2.text == "l2 value"
+    assert l3.text == "l3 value"
+    assert l4.text == "l4 value"
+    assert c1s.text == "c1s value"
+    assert l1s.text == "l1s value"
+
+    # make sure c5 cookie shows up on the `/foo` route
+    cookies = {cookie_info["name"]: cookie_info for cookie_info in driver.get_cookies()}
+
+    assert cookies["client_side_state.client_side_sub_state.c5"] == {
+        "domain": "localhost",
+        "httpOnly": False,
+        "name": "client_side_state.client_side_sub_state.c5",
+        "path": "/foo/",
+        "sameSite": "Lax",
+        "secure": False,
+        "value": "c5%20value",
+    }
+
+    # clear the cookie jar and local storage, ensure state reset to default
+    driver.delete_all_cookies()
+    local_storage.clear()
+
+    # refresh the page to trigger re-hydrate
+    driver.refresh()
+
+    # wait for the backend connection to send the token (again)
+    token_input = driver.find_element(By.ID, "token")
+    assert token_input
+    token = client_side.poll_for_value(token_input)
+    assert token is not None
+
+    # all values should be back to their defaults
+    c1 = driver.find_element(By.ID, "c1")
+    c2 = driver.find_element(By.ID, "c2")
+    c3 = driver.find_element(By.ID, "c3")
+    c4 = driver.find_element(By.ID, "c4")
+    c5 = driver.find_element(By.ID, "c5")
+    c6 = driver.find_element(By.ID, "c6")
+    c7 = driver.find_element(By.ID, "c7")
+    l1 = driver.find_element(By.ID, "l1")
+    l2 = driver.find_element(By.ID, "l2")
+    l3 = driver.find_element(By.ID, "l3")
+    l4 = driver.find_element(By.ID, "l4")
+    c1s = driver.find_element(By.ID, "c1s")
+    l1s = driver.find_element(By.ID, "l1s")
+
+    # assert on defaults where present
+    assert c1.text == ""
+    assert c2.text == "c2 default"
+    assert c3.text == ""
+    assert c4.text == ""
+    assert c5.text == ""
+    assert c6.text == ""
+    assert c7.text == "c7 default"
+    assert l1.text == ""
+    assert l2.text == "l2 default"
+    assert l3.text == ""
+    assert l4.text == "l4 default"
+    assert c1s.text == ""
+    assert l1s.text == ""
diff --git a/integration/test_dynamic_routes.py b/integration/test_dynamic_routes.py
index a42db3716..661e6ce79 100644
--- a/integration/test_dynamic_routes.py
+++ b/integration/test_dynamic_routes.py
@@ -1,6 +1,5 @@
 """Integration tests for dynamic route page behavior."""
 import time
-from contextlib import contextmanager
 from typing import Generator
 from urllib.parse import urlsplit
 
@@ -9,6 +8,8 @@ from selenium.webdriver.common.by import By
 
 from reflex.testing import AppHarness
 
+from .utils import poll_for_navigation
+
 
 def DynamicRoute():
     """App for testing dynamic routes."""
@@ -89,27 +90,6 @@ def driver(dynamic_route: AppHarness):
         driver.quit()
 
 
-@contextmanager
-def poll_for_navigation(driver, timeout: int = 5) -> Generator[None, None, None]:
-    """Wait for driver url to change.
-
-    Use as a contextmanager, and apply the navigation event inside the context
-    block, polling will occur after the context block exits.
-
-    Args:
-        driver: WebDriver instance.
-        timeout: Time to wait for url to change.
-
-    Yields:
-        None
-    """
-    prev_url = driver.current_url
-
-    yield
-
-    AppHarness._poll_for(lambda: prev_url != driver.current_url, timeout=timeout)
-
-
 def test_on_load_navigate(dynamic_route: AppHarness, driver):
     """Click links to navigate between dynamic pages with on_load event.
 
diff --git a/integration/utils.py b/integration/utils.py
new file mode 100644
index 000000000..273094c84
--- /dev/null
+++ b/integration/utils.py
@@ -0,0 +1,173 @@
+"""Helper utilities for integration tests."""
+from __future__ import annotations
+
+from contextlib import contextmanager
+from typing import Generator, Iterator
+
+from selenium.webdriver.remote.webdriver import WebDriver
+
+from reflex.testing import AppHarness
+
+
+@contextmanager
+def poll_for_navigation(
+    driver: WebDriver, timeout: int = 5
+) -> Generator[None, None, None]:
+    """Wait for driver url to change.
+
+    Use as a contextmanager, and apply the navigation event inside the context
+    block, polling will occur after the context block exits.
+
+    Args:
+        driver: WebDriver instance.
+        timeout: Time to wait for url to change.
+
+    Yields:
+        None
+    """
+    prev_url = driver.current_url
+
+    yield
+
+    AppHarness._poll_for(lambda: prev_url != driver.current_url, timeout=timeout)
+
+
+class LocalStorage:
+    """Class to access local storage.
+
+    https://stackoverflow.com/a/46361900
+    """
+
+    def __init__(self, driver: WebDriver):
+        """Initialize the class.
+
+        Args:
+            driver: WebDriver instance.
+        """
+        self.driver = driver
+
+    def __len__(self) -> int:
+        """Get the number of items in local storage.
+
+        Returns:
+            The number of items in local storage.
+        """
+        return int(self.driver.execute_script("return window.localStorage.length;"))
+
+    def items(self) -> dict[str, str]:
+        """Get all items in local storage.
+
+        Returns:
+            A dict mapping keys to values.
+        """
+        return self.driver.execute_script(
+            "var ls = window.localStorage, items = {}; "
+            "for (var i = 0, k; i < ls.length; ++i) "
+            "  items[k = ls.key(i)] = ls.getItem(k); "
+            "return items; "
+        )
+
+    def keys(self) -> list[str]:
+        """Get all keys in local storage.
+
+        Returns:
+            A list of keys.
+        """
+        return self.driver.execute_script(
+            "var ls = window.localStorage, keys = []; "
+            "for (var i = 0; i < ls.length; ++i) "
+            "  keys[i] = ls.key(i); "
+            "return keys; "
+        )
+
+    def get(self, key) -> str:
+        """Get a key from local storage.
+
+        Args:
+            key: The key to get.
+
+        Returns:
+            The value of the key.
+        """
+        return self.driver.execute_script(
+            "return window.localStorage.getItem(arguments[0]);", key
+        )
+
+    def set(self, key, value) -> None:
+        """Set a key in local storage.
+
+        Args:
+            key: The key to set.
+            value: The value to set the key to.
+        """
+        self.driver.execute_script(
+            "window.localStorage.setItem(arguments[0], arguments[1]);", key, value
+        )
+
+    def has(self, key) -> bool:
+        """Check if key is in local storage.
+
+        Args:
+            key: The key to check.
+
+        Returns:
+            True if key is in local storage, False otherwise.
+        """
+        return key in self
+
+    def remove(self, key) -> None:
+        """Remove a key from local storage.
+
+        Args:
+            key: The key to remove.
+        """
+        self.driver.execute_script("window.localStorage.removeItem(arguments[0]);", key)
+
+    def clear(self) -> None:
+        """Clear all local storage."""
+        self.driver.execute_script("window.localStorage.clear();")
+
+    def __getitem__(self, key) -> str:
+        """Get a key from local storage.
+
+        Args:
+            key: The key to get.
+
+        Returns:
+            The value of the key.
+
+        Raises:
+            KeyError: If key is not in local storage.
+        """
+        value = self.get(key)
+        if value is None:
+            raise KeyError(key)
+        return value
+
+    def __setitem__(self, key, value) -> None:
+        """Set a key in local storage.
+
+        Args:
+            key: The key to set.
+            value: The value to set the key to.
+        """
+        self.set(key, value)
+
+    def __contains__(self, key) -> bool:
+        """Check if key is in local storage.
+
+        Args:
+            key: The key to check.
+
+        Returns:
+            True if key is in local storage, False otherwise.
+        """
+        return self.has(key)
+
+    def __iter__(self) -> Iterator[str]:
+        """Iterate over the keys in local storage.
+
+        Returns:
+            An iterator over the items in local storage.
+        """
+        return iter(self.keys())
diff --git a/poetry.lock b/poetry.lock
index 514b8ffcc..dd6d2efaa 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1520,13 +1520,13 @@ files = [
 
 [[package]]
 name = "selenium"
-version = "4.10.0"
+version = "4.11.2"
 description = ""
 optional = false
 python-versions = ">=3.7"
 files = [
-    {file = "selenium-4.10.0-py3-none-any.whl", hash = "sha256:40241b9d872f58959e9b34e258488bf11844cd86142fd68182bd41db9991fc5c"},
-    {file = "selenium-4.10.0.tar.gz", hash = "sha256:871bf800c4934f745b909c8dfc7d15c65cf45bd2e943abd54451c810ada395e3"},
+    {file = "selenium-4.11.2-py3-none-any.whl", hash = "sha256:98e72117b194b3fa9c69b48998f44bf7dd4152c7bd98544911a1753b9f03cc7d"},
+    {file = "selenium-4.11.2.tar.gz", hash = "sha256:9f9a5ed586280a3594f7461eb1d9dab3eac9d91e28572f365e9b98d9d03e02b5"},
 ]
 
 [package.dependencies]
@@ -2125,4 +2125,4 @@ testing = ["big-O", "flake8 (<5)", "jaraco.functools", "jaraco.itertools", "more
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.7"
-content-hash = "2b00be45f1c3b5118e2d54b315991c37f65e9da3fa081dab6adb4c7bb1205c74"
+content-hash = "44cce3d4423be203bf6b1ddc046cbdd9061924523b86baea8a42cd954dc86b36"
diff --git a/pyproject.toml b/pyproject.toml
index 2929b33f9..99626ef13 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -65,7 +65,7 @@ pandas = [
 ]
 asynctest = "^0.13.0"
 pre-commit = {version = "^3.2.1", python = ">=3.8,<4.0"}
-selenium = "^4.10.0"
+selenium = "^4.11.0"
 
 [tool.poetry.scripts]
 reflex = "reflex.reflex:cli"
diff --git a/reflex/.templates/jinja/web/utils/context.js.jinja2 b/reflex/.templates/jinja/web/utils/context.js.jinja2
index cd9f20ffd..657c64e27 100644
--- a/reflex/.templates/jinja/web/utils/context.js.jinja2
+++ b/reflex/.templates/jinja/web/utils/context.js.jinja2
@@ -1,7 +1,10 @@
 import { createContext } from "react"
-import { E } from "/utils/state.js"
+import { E, hydrateClientStorage } from "/utils/state.js"
 
 export const initialState = {{ initial_state|json_dumps }}
-export const initialEvents = [E('{{state_name}}.{{const.hydrate}}', {})]
 export const StateContext = createContext(null);
-export const EventLoopContext = createContext(null);
\ No newline at end of file
+export const EventLoopContext = createContext(null);
+export const clientStorage = {{ client_storage|json_dumps }}
+export const initialEvents = [
+    E('{{state_name}}.{{const.hydrate}}', hydrateClientStorage(clientStorage)),
+]
\ No newline at end of file
diff --git a/reflex/.templates/web/pages/_app.js b/reflex/.templates/web/pages/_app.js
index 6411ee9b5..4039f5ae2 100644
--- a/reflex/.templates/web/pages/_app.js
+++ b/reflex/.templates/web/pages/_app.js
@@ -1,7 +1,7 @@
 import { ChakraProvider, extendTheme } from "@chakra-ui/react";
 import { Global, css } from "@emotion/react";
 import theme from "/utils/theme";
-import { initialEvents, initialState, StateContext, EventLoopContext } from "/utils/context.js";
+import { clientStorage, initialEvents, initialState, StateContext, EventLoopContext } from "/utils/context.js";
 import { useEventLoop } from "utils/state";
 
 import '../styles/tailwind.css'
@@ -18,6 +18,7 @@ function EventLoopProvider({ children }) {
   const [state, Event, connectError] = useEventLoop(
     initialState,
     initialEvents,
+    clientStorage,
   )
   return (
     <EventLoopContext.Provider value={[Event, connectError]}>
diff --git a/reflex/.templates/web/utils/state.js b/reflex/.templates/web/utils/state.js
index 9e1848436..50cb8e442 100644
--- a/reflex/.templates/web/utils/state.js
+++ b/reflex/.templates/web/utils/state.js
@@ -125,12 +125,12 @@ export const applyEvent = async (event, socket) => {
   }
 
   if (event.name == "_set_cookie") {
-    cookies.set(event.payload.key, event.payload.value);
+    cookies.set(event.payload.key, event.payload.value, { path: "/" });
     return false;
   }
 
   if (event.name == "_remove_cookie") {
-    cookies.remove(event.payload.key, event.payload.options)
+    cookies.remove(event.payload.key, { path: "/", ...event.payload.options })
     return false;
   }
 
@@ -257,6 +257,7 @@ export const processEvent = async (
  * @param transports The transports to use.
  * @param setConnectError The function to update connection error value.
  * @param initial_events Array of events to seed the queue after connecting.
+ * @param client_storage The client storage object from context.js
  */
 export const connect = async (
   socket,
@@ -264,6 +265,7 @@ export const connect = async (
   transports,
   setConnectError,
   initial_events = [],
+  client_storage = {},
 ) => {
   // Get backend URL object from the endpoint.
   const endpoint = new URL(EVENTURL);
@@ -288,6 +290,7 @@ export const connect = async (
   socket.current.on("event", message => {
     const update = JSON5.parse(message)
     dispatch(update.delta)
+    applyClientStorageDelta(client_storage, update.delta)
     event_processing = !update.final
     if (update.events) {
       queueEvents(update.events, socket)
@@ -357,10 +360,77 @@ export const E = (name, payload = {}, handler = null) => {
   return { name, payload, handler };
 };
 
+/**
+ * Package client-side storage values as payload to send to the
+ * backend with the hydrate event
+ * @param client_storage The client storage object from context.js
+ * @returns payload dict of client storage values
+ */
+export const hydrateClientStorage = (client_storage) => {
+  const client_storage_values = {
+    "cookies": {},
+    "local_storage": {}
+  }
+  if (client_storage.cookies) {
+    for (const state_key in client_storage.cookies) {
+      const cookie_options = client_storage.cookies[state_key]
+      const cookie_name = cookie_options.name || state_key
+      client_storage_values.cookies[state_key] = cookies.get(cookie_name)
+    }
+  }
+  if (client_storage.local_storage && (typeof window !== 'undefined')) {
+    for (const state_key in client_storage.local_storage) {
+      const options = client_storage.local_storage[state_key]
+      const local_storage_value = localStorage.getItem(options.name || state_key)
+      if (local_storage_value !== null) {
+        client_storage_values.local_storage[state_key] = local_storage_value
+      }
+    }
+  }
+  if (client_storage.cookies || client_storage.local_storage) {
+    return client_storage_values
+  }
+  return {}
+};
+
+/**
+ * Update client storage values based on backend state delta.
+ * @param client_storage The client storage object from context.js
+ * @param delta The state update from the backend
+ */
+const applyClientStorageDelta = (client_storage, delta) => {
+  // find the main state and check for is_hydrated
+  const unqualified_states = Object.keys(delta).filter((key) => key.split(".").length === 1);
+  if (unqualified_states.length === 1) {
+    const main_state = delta[unqualified_states[0]]
+    if (main_state.is_hydrated !== undefined && !main_state.is_hydrated) {
+      // skip if the state is not hydrated yet, since all client storage
+      // values are sent in the hydrate event
+      return;
+    }
+  }
+  // Save known client storage values to cookies and localStorage.
+  for (const substate in delta) {
+    for (const key in delta[substate]) {
+      const state_key = `${substate}.${key}`
+      if (client_storage.cookies && state_key in client_storage.cookies) {
+        const cookie_options = client_storage.cookies[state_key]
+        const cookie_name = cookie_options.name || state_key
+        delete cookie_options.name  // name is not a valid cookie option
+        cookies.set(cookie_name, delta[substate][key], cookie_options);
+      } else if (client_storage.local_storage && state_key in client_storage.local_storage && (typeof window !== 'undefined')) {
+        const options = client_storage.local_storage[state_key]
+        localStorage.setItem(options.name || state_key, delta[substate][key]);
+      }
+    }
+  }
+}
+
 /**
  * Establish websocket event loop for a NextJS page.
  * @param initial_state The initial page state.
  * @param initial_events Array of events to seed the queue after connecting.
+ * @param client_storage The client storage object from context.js
  *
  * @returns [state, Event, connectError] -
  *   state is a reactive dict,
@@ -370,6 +440,7 @@ export const E = (name, payload = {}, handler = null) => {
 export const useEventLoop = (
   initial_state = {},
   initial_events = [],
+  client_storage = {},
 ) => {
   const socket = useRef(null)
   const router = useRouter()
@@ -391,7 +462,7 @@ export const useEventLoop = (
 
     // Initialize the websocket connection.
     if (!socket.current) {
-      connect(socket, dispatch, ['websocket', 'polling'], setConnectError, initial_events)
+      connect(socket, dispatch, ['websocket', 'polling'], setConnectError, initial_events, client_storage)
     }
     (async () => {
       // Process all outstanding events.
diff --git a/reflex/__init__.py b/reflex/__init__.py
index e38f96499..53d0e0a38 100644
--- a/reflex/__init__.py
+++ b/reflex/__init__.py
@@ -38,6 +38,8 @@ from .model import session as session
 from .page import page as page
 from .route import route as route
 from .state import ComputedVar as var
+from .state import Cookie as Cookie
+from .state import LocalStorage as LocalStorage
 from .state import State as State
 from .style import color_mode as color_mode
 from .style import toggle_color_mode as toggle_color_mode
diff --git a/reflex/compiler/compiler.py b/reflex/compiler/compiler.py
index 0d5a325fb..de5fbad8b 100644
--- a/reflex/compiler/compiler.py
+++ b/reflex/compiler/compiler.py
@@ -83,6 +83,7 @@ def _compile_contexts(state: Type[State]) -> str:
     return templates.CONTEXT.render(
         initial_state=utils.compile_state(state),
         state_name=state.get_name(),
+        client_storage=utils.compile_client_storage(state),
     )
 
 
diff --git a/reflex/compiler/utils.py b/reflex/compiler/utils.py
index 5a234668b..f9a43b708 100644
--- a/reflex/compiler/utils.py
+++ b/reflex/compiler/utils.py
@@ -1,7 +1,10 @@
 """Common utility functions used in the compiler."""
+from __future__ import annotations
 
 import os
-from typing import Dict, List, Optional, Set, Tuple, Type
+from typing import Any, Dict, List, Optional, Set, Tuple, Type
+
+from pydantic.fields import ModelField
 
 from reflex import constants
 from reflex.components.base import (
@@ -19,7 +22,7 @@ from reflex.components.base import (
     Title,
 )
 from reflex.components.component import Component, ComponentStyle, CustomComponent
-from reflex.state import State
+from reflex.state import Cookie, LocalStorage, State
 from reflex.style import Style
 from reflex.utils import format, imports, path_ops
 from reflex.vars import ImportVar
@@ -129,6 +132,83 @@ def compile_state(state: Type[State]) -> Dict:
     return format.format_state(initial_state)
 
 
+def _compile_client_storage_field(
+    field: ModelField,
+) -> tuple[Type[Cookie] | Type[LocalStorage] | None, dict[str, Any] | None]:
+    """Compile the given cookie or local_storage field.
+
+    Args:
+        field: The possible cookie field to compile.
+
+    Returns:
+        A dictionary of the compiled cookie or None if the field is not cookie-like.
+    """
+    for field_type in (Cookie, LocalStorage):
+        if isinstance(field.default, field_type):
+            cs_obj = field.default
+        elif isinstance(field.type_, type) and issubclass(field.type_, field_type):
+            cs_obj = field.type_()
+        else:
+            continue
+        return field_type, cs_obj.options()
+    return None, None
+
+
+def _compile_client_storage_recursive(
+    state: Type[State],
+) -> tuple[dict[str, dict], dict[str, dict[str, str]]]:
+    """Compile the client-side storage for the given state recursively.
+
+    Args:
+        state: The app state object.
+
+    Returns:
+        A tuple of the compiled client-side storage info:
+            (
+                cookies: dict[str, dict],
+                local_storage: dict[str, dict[str, str]]
+            )
+    """
+    cookies = {}
+    local_storage = {}
+    state_name = state.get_full_name()
+    for name, field in state.__fields__.items():
+        if name in state.inherited_vars:
+            # only include vars defined in this state
+            continue
+        state_key = f"{state_name}.{name}"
+        field_type, options = _compile_client_storage_field(field)
+        if field_type is Cookie:
+            cookies[state_key] = options
+        elif field_type is LocalStorage:
+            local_storage[state_key] = options
+        else:
+            continue
+    for substate in state.get_substates():
+        substate_cookies, substate_local_storage = _compile_client_storage_recursive(
+            substate
+        )
+        cookies.update(substate_cookies)
+        local_storage.update(substate_local_storage)
+    return cookies, local_storage
+
+
+def compile_client_storage(state: Type[State]) -> dict[str, dict]:
+    """Compile the client-side storage for the given state.
+
+    Args:
+        state: The app state object.
+
+    Returns:
+        A dictionary of the compiled client-side storage info.
+    """
+    cookies, local_storage = _compile_client_storage_recursive(state)
+    return {
+        constants.COOKIES: cookies,
+        constants.LOCAL_STORAGE: local_storage,
+    }
+
+
 def compile_custom_component(
     component: CustomComponent,
 ) -> Tuple[dict, imports.ImportDict]:
diff --git a/reflex/constants.py b/reflex/constants.py
index 202ca275c..2f26e12a4 100644
--- a/reflex/constants.py
+++ b/reflex/constants.py
@@ -359,6 +359,10 @@ PING_TIMEOUT = 120
 # Alembic migrations
 ALEMBIC_CONFIG = os.environ.get("ALEMBIC_CONFIG", "alembic.ini")
 
+# Keys in the client_side_storage dict
+COOKIES = "cookies"
+LOCAL_STORAGE = "local_storage"
+
 # Names of event handlers on all components mapped to useEffect
 ON_MOUNT = "on_mount"
 ON_UNMOUNT = "on_unmount"
diff --git a/reflex/middleware/hydrate_middleware.py b/reflex/middleware/hydrate_middleware.py
index 588315ae9..7fd465f78 100644
--- a/reflex/middleware/hydrate_middleware.py
+++ b/reflex/middleware/hydrate_middleware.py
@@ -36,8 +36,21 @@ class HydrateMiddleware(Middleware):
         if event.name != get_hydrate_event(state):
             return None
 
-        # Get the initial state.
+        # Clear client storage, to respect clearing cookies
+        state._reset_client_storage()
+
+        # Mark state as not hydrated (until on_loads are complete)
         setattr(state, constants.IS_HYDRATED, False)
+
+        # Apply client side storage values to state
+        for storage_type in (constants.COOKIES, constants.LOCAL_STORAGE):
+            if storage_type in event.payload:
+                for key, value in event.payload[storage_type].items():
+                    state_name, _, var_name = key.rpartition(".")
+                    var_state = state.get_substate(state_name.split("."))
+                    setattr(var_state, var_name, value)
+
+        # Get the initial state.
         delta = format.format_state({state.get_name(): state.dict()})
         # since a full dict was captured, clean any dirtiness
         state._clean()
diff --git a/reflex/state.py b/reflex/state.py
index 7cd789fa0..e2df18881 100644
--- a/reflex/state.py
+++ b/reflex/state.py
@@ -688,6 +688,23 @@ class State(Base, ABC, extra=pydantic.Extra.allow):
         for substate in self.substates.values():
             substate.reset()
 
+    def _reset_client_storage(self):
+        """Reset client storage base vars to their default values."""
+        # Client-side storage is reset during hydrate so that clearing cookies
+        # on the browser also resets the values on the backend.
+        fields = self.get_fields()
+        for prop_name in self.base_vars:
+            field = fields[prop_name]
+            if isinstance(field.default, ClientStorageBase) or (
+                isinstance(field.type_, type)
+                and issubclass(field.type_, ClientStorageBase)
+            ):
+                setattr(self, prop_name, field.default)
+
+        # Recursively reset the substates.
+        for substate in self.substates.values():
+            substate.reset()
+
     def get_substate(self, path: Sequence[str]) -> Optional[State]:
         """Get the substate.
 
@@ -1110,3 +1127,104 @@ def _convert_mutable_datatypes(
         )
 
     return field_value
+
+
+class ClientStorageBase:
+    """Base class for client-side storage."""
+
+    def options(self) -> dict[str, Any]:
+        """Get the options for the storage.
+
+        Returns:
+            All set options for the storage (not None).
+        """
+        return {
+            format.to_camel_case(k): v for k, v in vars(self).items() if v is not None
+        }
+
+
+class Cookie(ClientStorageBase, str):
+    """Represents a state Var that is stored as a cookie in the browser."""
+
+    name: str | None
+    path: str
+    max_age: int | None
+    domain: str | None
+    secure: bool | None
+    same_site: str
+
+    def __new__(
+        cls,
+        object: Any = "",
+        encoding: str | None = None,
+        errors: str | None = None,
+        /,
+        name: str | None = None,
+        path: str = "/",
+        max_age: int | None = None,
+        domain: str | None = None,
+        secure: bool | None = None,
+        same_site: str = "lax",
+    ):
+        """Create a client-side Cookie (str).
+
+        Args:
+            object: The initial object.
+            encoding: The encoding to use.
+            errors: The error handling scheme to use.
+            name: The name of the cookie on the client side.
+            path: Cookie path. Use / as the path if the cookie should be accessible on all pages.
+            max_age: Relative max age of the cookie in seconds from when the client receives it.
+            domain: Domain for the cookie (sub.domain.com or .allsubdomains.com).
+            secure: Is the cookie only accessible through HTTPS?
+            same_site: Whether the cookie is sent with third party requests.
+                One of (true|false|none|lax|strict)
+
+        Returns:
+            The client-side Cookie object.
+
+        Note: expires (absolute Date) is not supported at this time.
+        """
+        if encoding or errors:
+            inst = super().__new__(cls, object, encoding or "utf-8", errors or "strict")
+        else:
+            inst = super().__new__(cls, object)
+        inst.name = name
+        inst.path = path
+        inst.max_age = max_age
+        inst.domain = domain
+        inst.secure = secure
+        inst.same_site = same_site
+        return inst
+
+
+class LocalStorage(ClientStorageBase, str):
+    """Represents a state Var that is stored in localStorage in the browser."""
+
+    name: str | None
+
+    def __new__(
+        cls,
+        object: Any = "",
+        encoding: str | None = None,
+        errors: str | None = None,
+        /,
+        name: str | None = None,
+    ) -> "LocalStorage":
+        """Create a client-side localStorage (str).
+
+        Args:
+            object: The initial object.
+            encoding: The encoding to use.
+            errors: The error handling scheme to use.
+            name: The name of the storage key on the client side.
+
+        Returns:
+            The client-side localStorage object.
+        """
+        if encoding or errors:
+            inst = super().__new__(cls, object, encoding or "utf-8", errors or "strict")
+        else:
+            inst = super().__new__(cls, object)
+        inst.name = name
+        return inst