Washington County, Nebraska

Washington County
Washington County Courthouse in Blair
Location within the U.S. state of Nebraska
Nebraska's location within the U.S.
Coordinates: 41°32′N 96°13′W / 41.53°N 96.22°W / 41.53; -96.22
Country United States
State Nebraska
Founded1854 (created)
1855 (reorganized)
Named afterGeorge Washington
SeatBlair
Largest cityBlair
Area
  Total
393 sq mi (1,020 km2)
  Land390 sq mi (1,000 km2)
  Water3.2 sq mi (8 km2)  0.8%
Population
 (2020)
  Total
20,865
  Estimate 
(2023)
21,152
  Density53/sq mi (20/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district1st
Websitewww.co.washington.ne.us

Washington County is a county in the U.S. state of Nebraska. As of the 2020 United States census, the population was 20,865. Its county seat is Blair. Washington County is part of the Omaha-Council Bluffs metropolitan area. In the Nebraska license plate system, Washington County is represented by the prefix 29 (it had the 29th-largest number of vehicles registered in the county when the license plate system was established in 1922).