Washington County
Also known as Washington County, Nebraska, Washington County, NE
county in Nebraska, United States
Key facts
- Country
- United States
- State
- Nebraska
- Founded
- November 23, 1854
- Named after
- George Washington
- Seat
- Blair
- Largest city
- Blair
- Total
- 393.197 sq mi (1,018.38 km )
- Land
- 389.930 sq mi (1,009.91 km )
- Water
- 3.267 sq mi (8.46 km ) 0.83%
- Estimate 2025
- 21,302
- Density
- 53.510/sq mi (20.660/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
~8 min read
Article
Washington County is a county in the U.S. state of Nebraska. As of the 2020 census, the population was 20,865, and was estimated to be 21,302 in 2025. The county seat and the largest city is Blair.
Washington County is part of the Omaha–Council Bluffs metropolitan area.