| Name | Waukesha County |
| State | Wisconsin |
| FIPS Code | 55133 |
| County Seat | Waukesha |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 389,740 |
| Population Growth Rate(2000-2022) | 4.38% |
| Majority Ethnicity | White 93.98% |
| Public School Majority Ethnicity | White 77% |
| Partisan Voting Index | Republican:+11 |
| Unemployment Rate (May 2025) | 3.1% |
| Area Code(s) | 262 / 414 / 274 / 920 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 93.98% |
| African American | 1.68% |
| Hispanic | 0.19% |
| Asian | 4.09% |
| Native American | 0.03% |
| Hawaiin/Pacific Islander | 0.03% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 76.78% |
| African American | 3.04% |
| Hispanic | 9.98% |
| Asian | 5.46% |
| Native American | 0.19% |
| Hawaiin/Pacific Islander | 0.08% |