diff --git a/.strict-typing b/.strict-typing
index f128385834bbe1..d0b47db2d59869 100644
--- a/.strict-typing
+++ b/.strict-typing
@@ -304,6 +304,7 @@ homeassistant.components.notify.*
 homeassistant.components.notion.*
 homeassistant.components.number.*
 homeassistant.components.nut.*
+homeassistant.components.onboarding.*
 homeassistant.components.oncue.*
 homeassistant.components.onewire.*
 homeassistant.components.open_meteo.*
diff --git a/homeassistant/components/onboarding/__init__.py b/homeassistant/components/onboarding/__init__.py
index d334a0051c3db7..4243d05c08567c 100644
--- a/homeassistant/components/onboarding/__init__.py
+++ b/homeassistant/components/onboarding/__init__.py
@@ -1,4 +1,6 @@
 """Support to help onboard new users."""
+from __future__ import annotations
+
 from typing import TYPE_CHECKING
 
 from homeassistant.core import HomeAssistant, callback
@@ -23,10 +25,15 @@
 CONFIG_SCHEMA = cv.empty_config_schema(DOMAIN)
 
 
-class OnboadingStorage(Store):
+class OnboadingStorage(Store[dict[str, list[str]]]):
     """Store onboarding data."""
 
-    async def _async_migrate_func(self, old_major_version, old_minor_version, old_data):
+    async def _async_migrate_func(
+        self,
+        old_major_version: int,
+        old_minor_version: int,
+        old_data: dict[str, list[str]],
+    ) -> dict[str, list[str]]:
         """Migrate to the new version."""
         # From version 1 -> 2, we automatically mark the integration step done
         if old_major_version < 2:
@@ -56,6 +63,7 @@ def async_is_user_onboarded(hass: HomeAssistant) -> bool:
 async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
     """Set up the onboarding component."""
     store = OnboadingStorage(hass, STORAGE_VERSION, STORAGE_KEY, private=True)
+    data: dict[str, list[str]] | None
     if (data := await store.async_load()) is None:
         data = {"done": []}
 
diff --git a/homeassistant/components/onboarding/views.py b/homeassistant/components/onboarding/views.py
index b1b4ea292220eb..c403bcd5ab2a69 100644
--- a/homeassistant/components/onboarding/views.py
+++ b/homeassistant/components/onboarding/views.py
@@ -3,7 +3,7 @@
 
 import asyncio
 from http import HTTPStatus
-from typing import cast
+from typing import TYPE_CHECKING, Any, cast
 
 from aiohttp import web
 from aiohttp.web_exceptions import HTTPUnauthorized
@@ -21,6 +21,9 @@
 from homeassistant.helpers.system_info import async_get_system_info
 from homeassistant.helpers.translation import async_get_translations
 
+if TYPE_CHECKING:
+    from . import OnboadingStorage
+
 from .const import (
     DEFAULT_AREAS,
     DOMAIN,
@@ -32,7 +35,9 @@
 )
 
 
-async def async_setup(hass, data, store):
+async def async_setup(
+    hass: HomeAssistant, data: dict[str, list[str]], store: OnboadingStorage
+) -> None:
     """Set up the onboarding view."""
     hass.http.register_view(OnboardingView(data, store))
     hass.http.register_view(InstallationTypeOnboardingView(data))
@@ -49,12 +54,12 @@ class OnboardingView(HomeAssistantView):
     url = "/api/onboarding"
     name = "api:onboarding"
 
-    def __init__(self, data, store):
+    def __init__(self, data: dict[str, list[str]], store: OnboadingStorage) -> None:
         """Initialize the onboarding view."""
         self._store = store
         self._data = data
 
-    async def get(self, request):
+    async def get(self, request: web.Request) -> web.Response:
         """Return the onboarding status."""
         return self.json(
             [{"step": key, "done": key in self._data["done"]} for key in STEPS]
@@ -68,16 +73,16 @@ class InstallationTypeOnboardingView(HomeAssistantView):
     url = "/api/onboarding/installation_type"
     name = "api:onboarding:installation_type"
 
-    def __init__(self, data):
+    def __init__(self, data: dict[str, list[str]]) -> None:
         """Initialize the onboarding installation type view."""
         self._data = data
 
-    async def get(self, request):
+    async def get(self, request: web.Request) -> web.Response:
         """Return the onboarding status."""
         if self._data["done"]:
             raise HTTPUnauthorized()
 
-        hass = request.app["hass"]
+        hass: HomeAssistant = request.app["hass"]
         info = await async_get_system_info(hass)
         return self.json({"installation_type": info["installation_type"]})
 
@@ -85,20 +90,20 @@ async def get(self, request):
 class _BaseOnboardingView(HomeAssistantView):
     """Base class for onboarding."""
 
-    step: str | None = None
+    step: str
 
-    def __init__(self, data, store):
+    def __init__(self, data: dict[str, list[str]], store: OnboadingStorage) -> None:
         """Initialize the onboarding view."""
         self._store = store
         self._data = data
         self._lock = asyncio.Lock()
 
     @callback
-    def _async_is_done(self):
+    def _async_is_done(self) -> bool:
         """Return if this step is done."""
         return self.step in self._data["done"]
 
-    async def _async_mark_done(self, hass):
+    async def _async_mark_done(self, hass: HomeAssistant) -> None:
         """Mark step as done."""
         self._data["done"].append(self.step)
         await self._store.async_save(self._data)
@@ -180,9 +185,9 @@ class CoreConfigOnboardingView(_BaseOnboardingView):
     name = "api:onboarding:core_config"
     step = STEP_CORE_CONFIG
 
-    async def post(self, request):
+    async def post(self, request: web.Request) -> web.Response:
         """Handle finishing core config step."""
-        hass = request.app["hass"]
+        hass: HomeAssistant = request.app["hass"]
 
         async with self._lock:
             if self._async_is_done():
@@ -205,7 +210,8 @@ async def post(self, request):
 
             if (
                 hassio.is_hassio(hass)
-                and "raspberrypi" in hassio.get_core_info(hass)["machine"]
+                and (core_info := hassio.get_core_info(hass))
+                and "raspberrypi" in core_info["machine"]
             ):
                 onboard_integrations.append("rpi_power")
 
@@ -232,9 +238,9 @@ class IntegrationOnboardingView(_BaseOnboardingView):
     @RequestDataValidator(
         vol.Schema({vol.Required("client_id"): str, vol.Required("redirect_uri"): str})
     )
-    async def post(self, request, data):
+    async def post(self, request: web.Request, data: dict[str, Any]) -> web.Response:
         """Handle token creation."""
-        hass = request.app["hass"]
+        hass: HomeAssistant = request.app["hass"]
         refresh_token_id = request[KEY_HASS_REFRESH_TOKEN_ID]
 
         async with self._lock:
@@ -276,9 +282,9 @@ class AnalyticsOnboardingView(_BaseOnboardingView):
     name = "api:onboarding:analytics"
     step = STEP_ANALYTICS
 
-    async def post(self, request):
+    async def post(self, request: web.Request) -> web.Response:
         """Handle finishing analytics step."""
-        hass = request.app["hass"]
+        hass: HomeAssistant = request.app["hass"]
 
         async with self._lock:
             if self._async_is_done():
diff --git a/homeassistant/components/person/__init__.py b/homeassistant/components/person/__init__.py
index 49b719a549032a..f6444a869ee7df 100644
--- a/homeassistant/components/person/__init__.py
+++ b/homeassistant/components/person/__init__.py
@@ -92,7 +92,13 @@
 
 
 @bind_hass
-async def async_create_person(hass, name, *, user_id=None, device_trackers=None):
+async def async_create_person(
+    hass: HomeAssistant,
+    name: str,
+    *,
+    user_id: str | None = None,
+    device_trackers: list[str] | None = None,
+) -> None:
     """Create a new person."""
     await hass.data[DOMAIN][1].async_create_item(
         {
diff --git a/mypy.ini b/mypy.ini
index a47452f6012e3d..87829af666bfea 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -2801,6 +2801,16 @@ disallow_untyped_defs = true
 warn_return_any = true
 warn_unreachable = true
 
+[mypy-homeassistant.components.onboarding.*]
+check_untyped_defs = true
+disallow_incomplete_defs = true
+disallow_subclassing_any = true
+disallow_untyped_calls = true
+disallow_untyped_decorators = true
+disallow_untyped_defs = true
+warn_return_any = true
+warn_unreachable = true
+
 [mypy-homeassistant.components.oncue.*]
 check_untyped_defs = true
 disallow_incomplete_defs = true