Margiblox is a county on the north to central coast of Greelia. One of 16 counties that constitute the first-level of administrative division in the nation, it has five districts. Kakatab serves as the capital with the area of the county measuring 1,010 square miles (2,600 km2). As of the 2022 Census, it had a population of 304,946, making it the fifth most populous county in Greelia.
The county is bordered by Bloxerrado County to the west, Grand Bloxa County to the east, and Bloxong County on the north.