How many people live in Gratiot County, MI?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 41,400 people living in Gratiot County, MI. That makes Gratiot County the 40th-most populous county in Michigan. It is home to 0.41% of people living in the state.
41.4K
population of Gratiot County, MI (2024)
0.41%
County share of the Michigan population (2024)
About 41,400 people lived in Gratiot County, MI in 2024.
Population estimates, 2000–2024
What are Gratiot County, MI’s age demographics?
Understanding the age demographics of Gratiot County, MI is useful for effective policy making and resource allocation. Age distribution data provides insights into the needs and priorities of different age groups within the community. In Gratiot County, MI, the population is categorized into various age groups such as 0-4, 5-9, 10-14, and so on. Comparing these demographics to broader regions, such as state or national averages, can highlight differences or similarities. Over time, trends in age demographics can reveal shifts in population dynamics, which may have implications for economic impact, educational needs, and healthcare services. By analyzing these trends, stakeholders can better plan for the future and address the specific needs of Gratiot County, MI’s residents.About 7,500 Gratiot County residents are aged 65 and older in 2024. That represents 18.1% of its population. For comparison, the age group represents 19.6% of Michigan’s population and 18% in the US overall.
Another 7,900 Gratiot County residents, or 19.2% 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 higher share of Gratiot County, MI's population is aged 18–24 than the US as a whole.
Population estimates by age group, (2024)
What are Gratiot County, MI’s racial and ethnic demographics?
Non-Hispanic white residents make up 83.6% of the Gratiot County, MI population, higher than the national share of 57.5%.
In contrast, Gratiot County’s Hispanic population accounts for 7.7%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 6.3% of the county, compared with 12.6% 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.
Gratiot 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 Gratiot County, MI is Alma with about 9,300 residents in 2024.
Cities and towns in Gratiot County, MI ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Alma | 9,349 |
| 2. | St. Louis (pt.) | 7,465 |
| 3. | Ithaca | 2,813 |
| 4. | Pine River | 2,357 |
| 5. | Seville | 2,116 |
| 6. | Sumner | 1,854 |
| 7. | Arcada | 1,648 |
| 8. | Breckenridge | 1,269 |
| 9. | Newark | 1,108 |
| 10. | New Haven | 1,056 |
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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.
