Fond du Lac County's 2026 population is estimated at 104,537, reflecting a 0.13% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Fond du Lac County is the 16th largest county in Wisconsin. The 2010 population was 101,579 and has grown 2.91% since 2010.
Data after 2023 is projected based on recent change
Overall: 41.9 years
Female: 42.8 years
Male: 41 years
There are 82,138 adults, (20,614 of whom are seniors) in Fond du Lac County.
Female: 52,294 (50.2%)
Male: 51,843 (49.8%)
The racial composition of Fond du Lac County includes 87.63% White, and smaller percentages for Asian, other race, Black or African American, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 91,257 | 87.63% |
| Two or more races | 6,787 | 6.52% |
| Asian | 1,976 | 1.9% |
| Other race | 1,903 | 1.83% |
| Black or African American | 1,770 | 1.7% |
| Native American | 444 | 0.43% |
Fond du Lac County 's average per capita income is $50,900. Household income levels show a median of $74,275. The poverty rate stands at 9.24%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $108,794 | $123,930 |
| Families | $99,576 | $112,926 |
| Households | $74,275 | $92,084 |
| Non Families | $45,402 | $54,592 |
Average Income
Median Household Income
Poverty Rate