Marinette County, Wisconsin Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 36th-largest in Wisconsin
The population of Marinette County, Wisconsin is 41,907 as of the 2023 American Community Survey, making it the 36th-largest county in Wisconsin. The median household income is $63,401, the median home value is $154,600, and the median age is 48.8.
The population of Marinette County has grown 1.6% since 2010 (41,662 → 42,343), a +0.12% annualized rate.
41,907
Population
+0.12%
Annual growth
30
People / sq mi
$63,401
Median Income
$154,600
Median Home Value
Marinette County covers 1,399 sq mi of land at 29.9 people per square mile.
About Marinette County, WI
Age is the most distinctive thing about Marinette County: a median age of 48.8, older than the national median. Marinette County is a county in Wisconsin with a population of 41,907. It ranks #36 among counties in Wisconsin by population.
Household earnings are middling, with a median of $63,401 — below the US median of $78,538. Poverty is relatively low for US counties at 6.3%, below the national 12.4%. Homes carry a median value of $154,600, with typical rent around $749.
Roughly 19.5% of adults have a bachelor’s, below the national 35.0%. Around 6.7% of workers work from home, below the national 14.0%, and the average commute runs about 21 minutes each way.
The age structure shapes everything downstream in Marinette County — from housing demand to the mix of working-age earners reflected in the income figures above.
Marinette County Population History (2010-2024)
The county of Marinette County had a population of 41,662 in 2010 and 42,343 in 2024, a 1.6% growth over 14 years. The peak was 42,343 in 2024. Average annual growth rate: 0.12%.
42,343
Population (2024)
41,662
Population (2010)
42,343
Peak (2024)
0.12%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 41,662 |
| 2011 | 41,419 |
| 2012 | 41,360 |
| 2013 | 41,306 |
| 2014 | 41,072 |
| 2015 | 40,676 |
| 2016 | 40,298 |
| 2017 | 40,341 |
| 2018 | 40,401 |
| 2019 | 40,256 |
| 2020 | 41,900 |
| 2021 | 41,875 |
| 2022 | 42,000 |
| 2023 | 42,113 |
| 2024 | 42,343 |
Race & Ethnicity
| White | 94.7% |
| Black or African American | 0.4% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.4% |
| Two or More Races | 0.0% |
Age & Sex
48.8
Median Age
49.3%
Female
50.7%
Male
24.6%
Age 65+
Age Distribution
Children (under 15): 15.2% · Seniors (65+): 24.6%
Income & Poverty
| Median household income | $63,401$-12,269 vs state |
| Mean household income | $80,117 |
| Per-capita income | $36,123 |
| Poverty rate | 6.3%-0.3% vs state |
| Unemployment rate | 2.2% |
| Employment-to-population | 55.3% |
Top Industries by Employment
The largest employment sector in Marinette County is manufacturing, accounting for 27.9% of workers.
How residents commute
0.2%
Drive alone
2.7%
Carpool
81.0%
Public transit
6.7%
Work from home
20.9 min
Avg commute
Housing
$154,600$-92,800 vs state
Median home value
$749
Median rent
80.4%
Homeownership rate
29,372
Total housing units
63.5%
Occupied
36.5%
Vacant
19.6%
Renter-occupied
Social & access
95.7%
With health insurance
91.6%
With broadband internet
31.4%
Foreign-born
9.7%
Veterans (18+)
15.3%
With a disability
96.9%
Speak language other than English at home
Education
93.1%
High School+
19.5%
Bachelor's+
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Frequently Asked Questions
Marinette County, Wisconsin has a population of 41,907 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 36th-largest county in Wisconsin. Population density is 30 people per square mile.
The population of Marinette County has grown 1.6% since 2010 (41,662 → 42,343), a +0.12% annualized rate.
The median household income in Marinette County, Wisconsin is $63,401, with mean (average) household income of $80,117 and per-capita income of $36,123. 6.3% of residents live below the federal poverty level.
In Marinette County, the largest racial and ethnic groups are White (94.7%), Hispanic or Latino (1.4%), Black or African American (0.4%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Marinette County, Wisconsin is 48.8 years. Residents are 49.3% female and 50.7% male.
The median home value in Marinette County is $154,600 and median monthly rent is $749. 80.4% of occupied housing units are owner-occupied. The county has 29,372 total housing units, 36.5% of which are vacant.
The largest employment sector in Marinette County, Wisconsin is manufacturing, employing 27.9% of workers. The unemployment rate is 2.2%.
Milwaukee is among the largest cities associated with Marinette County, Wisconsin, with a population of 569,756.
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.