Even though it is the county seat, thus containing most of the local government offices, it actually is one of the smaller cities in the area. Adjacent Sugar Land is the largest city in the county. The city of Richmond is the seat of Fort Bend County in the U.S. state of Texas within the HoustonSugarLandBaytown metropolitan area. As of the 2000 U.S. Census, the city population was 11,081. Richmond city boundaries are joined on one hand with SugarLand and with the city of Rosenberg on the other hand.