How many people live in St. Joseph County, MI?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 61,200 people living in St. Joseph County, MI. That makes St. Joseph County the 33rd-most populous county in Michigan. It is home to 0.6% of people living in the state.
61.2K
population of St. Joseph County, MI (2024)
0.6%
County share of the Michigan population (2024)
About 61,200 people lived in St. Joseph County, MI in 2024.
Population estimates, 2000–2024
What are St. Joseph County, MI’s age demographics?
About 12,200 St. Joseph County, MI residents are aged 65 and older in 2024. That represents 19.9% of its population. For comparison, the age group represents 19.6% of Michigan’s population and 18% in the US overall.
Another 14,600 St. Joseph County, MI residents, or 23.9% of the population, were children under 18. For comparison, the age group represents 20.8% of Michigan’s population and 21.6% in the US overall.
A lower share of St. Joseph County, MI's population is aged 25–44 than the US as a whole.
Population estimates by age group, (2024)
What are St. Joseph County, MI’s racial and ethnic demographics?
Non-Hispanic white residents make up 83.9% of the St. Joseph County, MI population, higher than the national share of 57.5%. St. Joseph County, MI also has a larger share of people identifying as non-Hispanic two or more races (2.5%) than the US overall (2.5%).
In contrast, St. Joseph County’s non-Hispanic Black or African American population accounts for 2.3%, below the 12.6% nationwide, and the Hispanic population makes up 10% of the county, compared with 20% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
St. Joseph County, MI has a higher share of a non-Hispanic white population than Michigan as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in St. Joseph County, MI is Sturgis with about 11,000 residents in 2024.
Cities and towns in St. Joseph County, MI ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Sturgis | 11,030 |
| 2. | Three Rivers | 7,958 |
| 3. | Sherman | 3,477 |
| 4. | Fabius | 3,328 |
| 5. | Park | 2,394 |
| 6. | Sturgis | 2,024 |
| 7. | Constantine | 2,000 |
| 8. | White Pigeon | 1,731 |
| 9. | Flowerfield | 1,618 |
| 10. | Fawn River | 1,532 |
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
