Harry lives in 4 Privet Drive, Ron lives in The Burrow, and Sirius lives in 12 Grimmauld Place. But where do Hermione and her Muggle parents live?
In the books we never get a clear indicator of where she lives, but from the movies she lives in Hampstead, London.
Now’s your chance to live like Hermione Granger—during summer vacation from Hogwarts, anyway. The house used as Emma Watson’s teenage witch’s family home in Harry Potter and the Deathly Hallows: Part 1 is up for sale for the first time in sixty years, according to the listing. Situated in a cul-de-sac in the northern London suburb of Hampstead, it’s a spacious three-level, six-bedroom home with a classic, verdant back garden; you can just imagine the fictional dentists Mr. and Mrs. Granger raising their super-studious daughter Hermione in the light-filled living room.
- You Can Now Live in Hermione Granger's House from the Harry Potter Movies - Time
So if we are to trust the movies; she lived in Hampstead, but other than that there is no mention of where she lives (in the books).