GTA 6 takes place in Leonida, a fictional state inspired by Florida. These are the regions shown so far.
Vice City
Leonida's main city, inspired by Miami: beaches, nightlife, neon.
Leonida Keys
Island chain in the south, inspired by the Florida Keys.
Grassrivers
Wetlands inspired by the Everglades: swamps, airboats, alligators.
Port Gellhorn
A faded resort and port town on the Gulf coast.
Ambrosia
Inland industrial area built around a sugar refinery.
Mount Kalaga National Park
Forests and hills in the north — the wild side of Leonida.