COUNTY · NE
Washington County, Nebraska
Washington County is a county in Nebraska with FIPS code 31177 and an estimated population of 21,152 (Census 2023), 17th largest of 93 in the state.
County facts
- Name
- Washington County
- State
- Nebraska
- Type
- county
- FIPS code
- 31177
- State FIPS
- 31
- Population (2023)
- 21,152
- Change since 2020
- +1.1%
- State rank
- 17 of 93
Population is the Census Bureau’s Vintage 2023 estimate.
Questions
What is the FIPS code for Washington County?
Washington County, Nebraska has the five-digit FIPS code 31177: 31 for the state and 177 for the county.
What state is Washington County in?
Washington County is in Nebraska.
How do I know if an address is in this county?
Use the address lookup. ZIP codes and city names can cross county lines, so an address is the reliable check.
Sources: U.S. Census Bureau geographic reference files; Census Bureau Population Estimates, Vintage 2023. Last reviewed 2026-10-27.