Portage County's 2026 population is estimated at 73,198, reflecting a 0.8% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Portage County is the 23rd largest county in Wisconsin. The 2010 population was 70,025 and has grown 4.53% since 2010.
Data after 2023 is projected based on recent change
Overall: 38 years
Female: 39 years
Male: 37.1 years
There are 57,538 adults, (12,990 of whom are seniors) in Portage County.
Female: 34,728 (49%)
Male: 36,104 (51%)
The racial composition of Portage County includes 90% White, and smaller percentages for Asian, other race, Black or African American, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 63,752 | 90% |
| Two or more races | 3,086 | 4.36% |
| Asian | 2,039 | 2.88% |
| Other race | 1,296 | 1.83% |
| Black or African American | 547 | 0.77% |
| Native American | 112 | 0.16% |
Portage County 's average per capita income is $52,486. Household income levels show a median of $76,070. The poverty rate stands at 10.09%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $110,686 | $125,756 |
| Families | $99,881 | $115,069 |
| Households | $76,070 | $94,142 |
| Non Families | $45,397 | $58,867 |
Average Income
Median Household Income
Poverty Rate