Do Muggles also live in places such as Godric's Hollows, Hogsmeade and Diagon Alley as well as other towns and villages with magical populations? If yes, do they refer to those places using different names to the wizarding world?
I don't think that Muggles live in places like Hogsmeade or Diagon Alley because they are well protected not to be recognized from Muggles. But they could live in Godric's Hollow cause its just a "normal" village, just filled up with a lot of witches and wizards!
In the first book when Harry and Hagrid arrive in London and stand in front of the Leaky Cauldron, Harry mentions that it seems that only Hagrid and him can see the entrance to the pub and the Muggles just look over it as if it wasn't there. And since the entrance to Diagon Alley is in the back of the Leaky Cauldron, Muggles can't have knowledge of Diagon Alley.
Or just think about Hogwarts and how it is protected from Muggles: If Muggles come near, they just see an old ruin with a sign not to enter it because the roof could come down any minute. And if they still wanna go in, the Anti-Muggle-Spell comes into action and the Muggles feel a sudden urge to leave.
So Hogwarts and Godric's Hollow could be known by the Muggles (Hogwarts as old ruin), but Hogsmeade and Diagon Alley are too well protected to be known or to be habit to some muggles.