Bay County
Also known as Bay County, Michigan, Bay County, MI
county in Michigan, United States
Key facts
- Country
- United States
- State
- Michigan
- Founded
- February 17, 1857
- Named after
- Saginaw Bay
- Seat
- Bay City
- Largest city
- Bay City
- Total
- 631 sq mi (1,630 km )
- Land
- 442 sq mi (1,140 km )
- Water
- 188 sq mi (490 km ) 30%
- Estimate 2025
- 102,123
- Density
- 235/sq mi (90.7/km )
- Time zone
- UTC−5 ( Eastern )
- Summer dst
- UTC−4 ( EDT )
Article
Bay County is located in the U.S. state of Michigan. As of the 2020 Census, the population was 103,856. The county seat is Bay City. Bay County comprises the Bay City, MI Metropolitan Statistical Area and is included in the Saginaw-Midland-Bay City Combined Statistical Area in the Mid/Central Michigan region.
History