COUNTY · NE
Buffalo County, Nebraska
Buffalo County is a county in Nebraska with FIPS code 31019 and an estimated population of 50,697 (Census 2023), 5th largest of 93 in the state.
County facts
- Name
- Buffalo County
- State
- Nebraska
- Type
- county
- FIPS code
- 31019
- State FIPS
- 31
- Population (2023)
- 50,697
- Change since 2020
- +1.0%
- State rank
- 5 of 93
Population is the Census Bureau’s Vintage 2023 estimate.
Questions
What is the FIPS code for Buffalo County?
Buffalo County, Nebraska has the five-digit FIPS code 31019: 31 for the state and 019 for the county.
What state is Buffalo County in?
Buffalo 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.