
St. Joseph County
- State:
- Michigan
- County Seat:
- Centreville
St. Joseph County's estimated 2025 population is 61,078 with a growth rate of 0.16% in the past year according to the most recent United States census data. St. Joseph County is the 33rd largest county in Michigan. The 2010 population was 61,288 and has seen a growth of -0.34% since that time.