Grand Bloxa is a county in the west-central portion of the West African nation of Greelia. One of 16 counties that comprise the first-level of administrative division in the nation, it has eight districts. Bloxchanan serves as the capital with the area of the county measuring 3,064 square miles (7,940 km2). As of the 2022 Census, it had a population of 293,557, making it the sixth most populous county in Greelia.
The county is bordered by Margiblox County to the northwest, Bloxong County to the north, Ro-Nimba County to the east, and Riverbess County to the south and east. The western part of Grand Bloxa borders the ocean.