COUNTY · MN
Martin County, Minnesota
Martin County is a county in Minnesota with FIPS code 27091 and an estimated population of 19,657 (Census 2023), 49th largest of 87 in the state.
County facts
- Name
- Martin County
- State
- Minnesota
- Type
- county
- FIPS code
- 27091
- State FIPS
- 27
- Population (2023)
- 19,657
- Change since 2020
- -1.7%
- State rank
- 49 of 87
Population is the Census Bureau’s Vintage 2023 estimate.
Questions
What is the FIPS code for Martin County?
Martin County, Minnesota has the five-digit FIPS code 27091: 27 for the state and 091 for the county.
What state is Martin County in?
Martin County is in Minnesota.
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.