Waukesha County's estimated 2026 population is 418,654 with a growth rate of 0.35% in the past year according to the most recent United States census data. Waukesha County is the 3rd largest county in Wisconsin. The 2010 population was 390,051 and has seen a growth of 7.33% since that time.
Data after 2023 is projected based on recent change
Overall: 43.5 years
Female: 44.6 years
Male: 42.5 years
There are 325,464 adults, (84,338 of whom are seniors) in Waukesha County.
Female: 207,556 (50.4%)
Male: 204,206 (49.6%)
The racial composition of Waukesha County includes 86.74% White, 3.88% Asian, and smaller percentages for Black or African American, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 357,179 | 86.74% |
| Two or more races | 25,425 | 6.17% |
| Asian | 15,988 | 3.88% |
| Black or African American | 6,501 | 1.58% |
| Other race | 5,609 | 1.36% |
| Native American | 1,028 | 0.25% |
| Native Hawaiian or Pacific Islander | 32 | 0.01% |
Waukesha County's average per capita income is $67,176. Household income levels show a median of $106,076. The poverty rate stands at 5.23%.
Name | Median | Mean |
|---|---|---|
| Married Families | $143,015 | $178,223 |
| Families | $132,381 | $165,195 |
| Households | $106,076 | $137,605 |
| Non Families | $56,718 | $76,896 |
Average Income
Median Household Income
Poverty Rate
