4 Privet Drive was the street address of the home owned by Vernon and Petunia Dursley. They lived in this home with their son, Dudley as well as their nephew, Harry Potter, son of Lily Potter, Petunia's late sister and Lily's husband James Potter.
Number 4 Privet Drive is a thoroughly ordinary house on a thoroughly ordinary street, in the fictional suburb of Surrey called Little Whinging, where Harry Potter lives with the Dursleys, his thoroughly ordinary aunt, uncle, and cousin.
7 Privet Drive is the street address of a house in Privet Drive. This house is home of a woman who Petunia Dursley enjoys spying on, and who Harry Potter refers to as "Mrs Number Seven". Harry Potter and the Philosopher's Stone (film).
Privet Drive is a suburban street in Little Whinging, which is located in the county of Surrey, near London in the southeast of England. The neighbourhood consists of a number of boring, boxy houses with gardens at the front and back. The Dursleys lived on this street, in Number Four.