Northumberland County, Virginia

Northumberland County
Northumberland County Courthouse in Heathsville
Location within the U.S. state of Virginia
Virginia's location within the U.S.
Coordinates: 37°52′N 76°23′W / 37.86°N 76.38°W / 37.86; -76.38
Country United States
State Virginia
Founded1648
SeatHeathsville
Largest communityHeathsville
Area
  Total
286 sq mi (740 km2)
  Land191 sq mi (490 km2)
  Water94 sq mi (240 km2)  33.0%
Population
 (2020)
  Total
11,839
  Density41/sq mi (16/km2)
Time zoneUTC−5 (Eastern)
  Summer (DST)UTC−4 (EDT)
Congressional district1st
Websitewww.co.northumberland.va.us

Northumberland County is a county located in the Commonwealth of Virginia. At the 2020 census, the population was 11,839. Its county seat is Heathsville. The county is located on the Northern Neck and is part of the Northern Neck George Washington Birthplace AVA winemaking appellation.