Fond du Lac County, Wisconsin Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 16th-largest in Wisconsin
The population of Fond du Lac County, Wisconsin is 104,053 as of the 2023 American Community Survey, making it the 16th-largest county in Wisconsin. The median household income is $73,154, the median home value is $209,800, and the median age is 41.9.
The population of Fond du Lac County has grown 2.6% since 2010 (101,579 → 104,269), a +0.19% annualized rate.
104,053
Population
+0.19%
Annual growth
145
People / sq mi
$73,154
Median Income
$209,800
Median Home Value
Fond du Lac County covers 720 sq mi of land at 144.6 people per square mile.
About Fond du Lac County, WI
Fond du Lac County is a county in Wisconsin with a population of 104,053. It ranks #16 among counties in Wisconsin by population. The median age is 41.9, older than the national median. The population is 49.7% male and 50.3% female.
The median household income in Fond du Lac County is $73,154, near the US median of $74,580. 5.1% of residents live below the federal poverty level. Home values sit at a median of $209,800, with monthly rent averaging $926. The homeownership rate of 70.3% is higher than the national rate of 64.8%.
Educational attainment in Fond du Lac County reflects 22.6% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 8.2% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 21.5 minutes each way.
Fond du Lac County Population History (2010-2024)
The county of Fond du Lac County had a population of 101,579 in 2010 and 104,269 in 2024, a 2.6% growth over 14 years. The peak was 104,269 in 2024. Average annual growth rate: 0.19%.
104,269
Population (2024)
101,579
Population (2010)
104,269
Peak (2024)
0.19%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 101,579 |
| 2011 | 101,822 |
| 2012 | 101,802 |
| 2013 | 101,808 |
| 2014 | 101,993 |
| 2015 | 101,970 |
| 2016 | 102,189 |
| 2017 | 102,324 |
| 2018 | 102,777 |
| 2019 | 103,079 |
| 2020 | 104,156 |
| 2021 | 104,117 |
| 2022 | 104,010 |
| 2023 | 104,135 |
| 2024 | 104,269 |
Race & Ethnicity
| White | 88.8% |
| Black or African American | 1.7% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.1% |
| Two or More Races | 0.0% |
Age & Sex
41.9
Median Age
50.3%
Female
49.7%
Male
19.3%
Age 65+
Age Distribution
Children (under 15): 17.4% · Seniors (65+): 19.3%
Income & Poverty
| Median household income | $73,154$-2,516 vs state |
| Mean household income | $91,108 |
| Per-capita income | $38,436 |
| Poverty rate | 5.1%-1.5% vs state |
| Unemployment rate | 2.0% |
| Employment-to-population | 63.0% |
Top Industries by Employment
The largest employment sector in Fond du Lac County is manufacturing, accounting for 23.7% of workers.
How residents commute
0.1%
Drive alone
2.3%
Carpool
79.3%
Public transit
8.2%
Work from home
21.5 min
Avg commute
Housing
$209,800$-37,600 vs state
Median home value
$926
Median rent
70.3%
Homeownership rate
45,908
Total housing units
93.7%
Occupied
6.3%
Vacant
29.7%
Renter-occupied
Social & access
96.3%
With health insurance
93.3%
With broadband internet
14.7%
Foreign-born
7.1%
Veterans (18+)
12.2%
With a disability
94.2%
Speak language other than English at home
Education
93.0%
High School+
22.6%
Bachelor's+
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Frequently Asked Questions
Fond du Lac County, Wisconsin has a population of 104,053 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 16th-largest county in Wisconsin. Population density is 145 people per square mile.
The population of Fond du Lac County has grown 2.6% since 2010 (101,579 → 104,269), a +0.19% annualized rate.
The median household income in Fond du Lac County, Wisconsin is $73,154, with mean (average) household income of $91,108 and per-capita income of $38,436. 5.1% of residents live below the federal poverty level.
In Fond du Lac County, the largest racial and ethnic groups are White (88.8%), Black or African American (1.7%), Hispanic or Latino (1.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Fond du Lac County, Wisconsin is 41.9 years. Residents are 50.3% female and 49.7% male.
The median home value in Fond du Lac County is $209,800 and median monthly rent is $926. 70.3% of occupied housing units are owner-occupied. The county has 45,908 total housing units, 6.3% of which are vacant.
The largest employment sector in Fond du Lac County, Wisconsin is manufacturing, employing 23.7% of workers. The unemployment rate is 2.0%.
Milwaukee is among the largest cities associated with Fond du Lac 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.