COUNTY · MI
Bay County, Michigan
Bay County is a county in Michigan with FIPS code 26017 and an estimated population of 102,500 (Census 2023), 20th largest of 83 in the state.
County facts
- Name
- Bay County
- State
- Michigan
- Type
- county
- FIPS code
- 26017
- State FIPS
- 26
- Population (2023)
- 102,500
- Change since 2020
- -1.2%
- State rank
- 20 of 83
Population is the Census Bureau’s Vintage 2023 estimate.
Questions
What is the FIPS code for Bay County?
Bay County, Michigan has the five-digit FIPS code 26017: 26 for the state and 017 for the county.
What state is Bay County in?
Bay County is in Michigan.
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.