How many people live in Marinette County, WI?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 42,300 people living in Marinette County, WI. That makes Marinette County the 36th-most populous county in Wisconsin. It is home to 0.71% of people living in the state.
42.3K
population of Marinette County, WI (2024)
0.71%
County share of the Wisconsin population (2024)
About 42,300 people lived in Marinette County, WI in 2024.
Population estimates, 2000–2024
What are Marinette County, WI’s age demographics?
About 11,200 Marinette County, WI residents are aged 65 and older in 2024. That represents 26.3% of its population. For comparison, the age group represents 19.6% of Wisconsin’s population and 18% in the US overall.
Another 7,800 Marinette County residents, or 18.5% of the population, were children under 18. For comparison, the age group represents 20.8% of Wisconsin’s population and 21.6% in the US overall.
A higher share of Marinette County, WI's population is aged 65 or older than the US as a whole.
Population estimates by age group, (2024)
What are Marinette County, WI’s racial and ethnic demographics?
Non-Hispanic white residents make up 93.3% of the Marinette County population, higher than the national share of 57.5%. Marinette County also has a larger share of people identifying as non-Hispanic American Indian and Alaska Native (0.72%) than the US overall (0.72%).
In contrast, Marinette County’s Hispanic population accounts for 3.3%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 0.77% 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.
Marinette County, WI has a higher share of a non-Hispanic white population than Wisconsin as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Marinette County, WI is Marinette with about 11,100 residents in 2024.
Cities and towns in Marinette County, WI ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Marinette | 11,139 |
| 2. | Peshtigo | 4,055 |
| 3. | Stephenson | 3,624 |
| 4. | Peshtigo | 3,409 |
| 5. | Porterfield | 1,921 |
| 6. | Grover | 1,740 |
| 7. | Niagara | 1,579 |
| 8. | Pound | 1,428 |
| 9. | Lake | 1,221 |
| 10. | Beaver | 1,185 |
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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.
