COUNTY · WI
Brown County, Wisconsin
Brown County is a county in Wisconsin with FIPS code 55009 and an estimated population of 271,417 (Census 2023), 4th largest of 72 in the state.
County facts
- Name
- Brown County
- State
- Wisconsin
- Type
- county
- FIPS code
- 55009
- State FIPS
- 55
- Population (2023)
- 271,417
- Change since 2020
- +0.9%
- State rank
- 4 of 72
Population is the Census Bureau’s Vintage 2023 estimate.
Major cities in Brown County
Other counties in Wisconsin
Questions
What is the FIPS code for Brown County?
Brown County, Wisconsin has the five-digit FIPS code 55009: 55 for the state and 009 for the county.
What state is Brown County in?
Brown County is in Wisconsin.
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.