
Big Bay
- County:
- Marquette County
- County Seat:
- No
- Area (mi²):
- 3.896
- State:
- Michigan
Big Bay is a CDP located in Marquette County, Michigan. Big Bay has a 2025 population of 505. Big Bay is currently growing at a rate of 2.43% annually but its population has decreased by -9.01% since the most recent census, which recorded a population of 555 in 2020.
The average household income in Big Bay is $49,462 with a poverty rate of 21.96%. The median age in Big Bay is 53.2 years: 64.9 years for males, and 38.7 years for females.