Places
Privet Drive
Number Four, Privet Drive, in Little Whinging, Surrey, is the Dursley house where Harry grows up in the cupboard under the stairs and later in Dudley’s second bedroom. The protection Lily left in her sacrifice holds while Harry can call it home. The last book opens the protection’s end with the flight of the seven Potters.

First mention
Harry Potter and the Philosopher's StoneChapter: The Boy Who Lived
Dumbledore, McGonagall, and Hagrid leave the infant Harry on the doorstep.