He used a device of his own invention called a deluminater.
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Privet Drive
The streets near Hogwarts are never actually named, mostly because they don't exist and Hogwarts is supposed to be hidden. You're probably talking about the village next to Hogwarts, this is called Hogsmeade.
Vernon, Petunia, and Dudley Dursley live at Number 4 Privet Drive, as does Harry Potter. Privet Drive is filled with ordinary Muggles, with the exception of Arabella Figg, a Squib who kept an eye on Harry for the wizarding world without him realizing it.
The put-outer, or deluminator, is a device invented by Albus Dumbledore. When used, the light in a lamp, street light or overheard light will be transferred and stored in the device which can then be used when in a dark room. The deluminator also led Ron back to Harry and Hermione.
Dudley Dursley, Vernon Dursley (Uncle), and Petunia Dursley (Aunt) live at Number 4 Privet Drive, Little Whinging, Surrey. Surrey is an actual town in England, however, Little Whinging is a fictional place.