COUNTY · WI
Grant County, Wisconsin
Grant County is a county in Wisconsin with FIPS code 55043 and an estimated population of 51,409 (Census 2023), 28th largest of 72 in the state.
County facts
- Name
- Grant County
- State
- Wisconsin
- Type
- county
- FIPS code
- 55043
- State FIPS
- 55
- Population (2023)
- 51,409
- Change since 2020
- -1.1%
- State rank
- 28 of 72
Population is the Census Bureau’s Vintage 2023 estimate.
Questions
What is the FIPS code for Grant County?
Grant County, Wisconsin has the five-digit FIPS code 55043: 55 for the state and 043 for the county.
What state is Grant County in?
Grant 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.