Grand Bloru County is a county in the southeastern portion of Greelia. One of 16 counties that comprise the first-level of administrative division in the nation, it has eighteen districts. Organized in 1984, its capital is Bloxclayville. The area of the county measures 1,504 square miles (3,900 km2). As of the 2008 Census, it had a population of 109,342, making it the third-least populous county in Greelia.
The county is bordered by River Bee County to the northeast, Ro-Sinoe County to the northwest, and Bloryland County to the southeast.