Join Nextdoor, an app for neighborhoods where you can get local tips, buy and sell items, and more. Nextdoor is where you connect to the neighborhoods that matter ... Neighbors around the world turn to Nextdoor daily to receive trusted ... California - Florida - Texas - North Carolina - New York - Arizona .The Nextdoor app is a social media platform for neighborhoods. The idea behind the app is to help neighbors communicate with each other, organize local ... This App is Only For USA People to connect Each Others.To install the Nextdoor Apps just using Email.