The lands in the Wind Waker are just flooded Hyrule. It's not like it's a new land or anything. Hyrule is still there, at the bottom of the seas....So here goes:
Dragon Roost - Death Mountain
Forest Haven - Kokiri Forest
Earth Temple - Apparently what's left of the Spirit Temple....
Tower of the Gods - Right about Hyrule Castle
Windfall Island - Kakariko??
As for the races:
Goron - there are actually a few Goron's left in the Wind Waker. For example the merchant Greatfish Isle. And he looks just like a Goron from Ocarina
Zora - they are now the Rito...
Kokiri - gone. oops.
Gerudo - gone, except for Ganondorf who is immortal....
Hyrulians - they are still all over, of course
Hylians - there are a few left, such as Link and his family, the girls that got kidnapped, and Zelda and her dad...