Demographics & People — Waukesha County, Wisconsin
Population & Households
| Population (official) | 407,290 |
|---|---|
| Median Age | 43.30 |
| Veterans | 19,401 |
| Housing Units | 172,274 |
| Uninsured | 1,973 |
Migration
| Inflow | 424,055 |
|---|---|
| Outflow | 419,254 |
| Net | 4,801 |
| Growing | Yes |
| Year | 2022-2023 |
Source: Census ACS 5-Year 2022. Official numbers: Census ACS 5-Year 2022 — county-level query.
Data provenance: aggregated from town-level sources, county.json. Rebuilt 2026-04-13T15:43:31.373612+00:00; aggregated 2026-04-13T16:08:26.435720+00:00.