Mariana County

Overview

Mariana County is a county in the State of Leonida in Grand Theft Auto VI. Rockstar has not published a county map or said what the county contains (checked September 29, 2026).

Mariana County was first revealed in Trailer 2, where its name appears on an Interstate 404 directional sign in the Port Gellhorn area, listed alongside Vice-Dale County. The sign points east, so Mariana County lies somewhere east of Port Gellhorn along the interstate.

What the County Might Contain

If Mariana County follows Monroe County, its likely real-world model, it would take in Everglades-style wetlands like the Grassrivers and an island chain like the Leonida Keys. Rockstar has not placed either region, or towns such as Watson Bay and Key Lento, in Mariana County.

Real-World Inspiration

Mariana County may be based on Monroe County, Florida, which encompasses the Florida Keys, the Everglades National Park, and several small mainland communities. The county name may also draw from Marion County, Florida.

Monroe County is one of the southernmost counties in the continental United States and is known for its unique geography, stretching from the Everglades on the mainland through the chain of islands that make up the Florida Keys.

Transportation

The only official link between Mariana County and the road network is the Trailer 2 sign on Interstate 404, which lists it with Vice-Dale County and points east. Rockstar has not shown which roads run through the county.

Key Facts