COUNTY · MO
Linn County, Missouri
Linn County is a county in Missouri with FIPS code 29115 and an estimated population of 11,791 (Census 2023), 77th largest of 115 in the state.
County facts
- Name
- Linn County
- State
- Missouri
- Type
- county
- FIPS code
- 29115
- State FIPS
- 29
- Population (2023)
- 11,791
- Change since 2020
- -0.6%
- State rank
- 77 of 115
Population is the Census Bureau’s Vintage 2023 estimate.
Questions
What is the FIPS code for Linn County?
Linn County, Missouri has the five-digit FIPS code 29115: 29 for the state and 115 for the county.
What state is Linn County in?
Linn County is in Missouri.
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.