Is there an official GTA 6 map?
No. Rockstar has not released an official GTA 6 map. Only Vice City and the Keys (Key Lento) are officially named. Any 'full GTA 6 map' circulating online is fan-made or leaked — not official.
The complete map and its regions have not been revealed.
LeonidaMap will add the verified, interactive map as Rockstar reveals locations.