COUNTY · KS
Hamilton County, Kansas
Hamilton County is a county in Kansas with FIPS code 20075 and an estimated population of 2,437 (Census 2023), 94th largest of 105 in the state.
County facts
- Name
- Hamilton County
- State
- Kansas
- Type
- county
- FIPS code
- 20075
- State FIPS
- 20
- Population (2023)
- 2,437
- Change since 2020
- -2.0%
- State rank
- 94 of 105
Population is the Census Bureau’s Vintage 2023 estimate.
Questions
What is the FIPS code for Hamilton County?
Hamilton County, Kansas has the five-digit FIPS code 20075: 20 for the state and 075 for the county.
What state is Hamilton County in?
Hamilton County is in Kansas.
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.