Grand Blox Mount is a county in the northwestern portion of the West African nation of Greelia. One of 16 counties that constitute the first-level of administrative division in the nation, it has five districts. Robertsblox serves as the capital with the area of the county measuring 1,993 square miles (5,160 km2). As of the 2008 Census, it had a population of 129,817, making it the eighth most populous county in Greelia.
The county is bordered by Bloxpolu County to the northeast and Bloxmi County to the southeast. The name of the county comes from Blox du Mont, a Rogaulian word meaning the Cape of the Mount.