Dinwiddie County is a county located in the Commonwealth of Virginia. As of the 2020 census, the population was 27,947. Its county seat is Dinwiddie. Dinwiddie County is part of the Richmond, VA Metropolitan Statistical Area.

Population: 28,161 (2022)
Cities: Dinwiddie, McKenney
Congressional district: 4th
Founded: 1752
Largest town: McKenney
Seat: Dinwiddie