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Market insights · Wisconsin

Waukesha County, WI: growth, migration and housing

Waukesha County has 417,210 residents, up 2.4% since 2020 (+0.3% in the last year). In 2022–2023, 10,950 households moved in and 10,608 moved out (+342 net), while a net $8.9M of income left. Median household income is $106,076, the median home $398,200 and median rent $1,356 a month.

Population (2025)417,210
5-year growth+2.4%
1-year growth+0.3%
Net households moving in+342
Per 1,000 residents+0.8
Net income moving in-$8.9M
Median household income$106,076
Median home value$398,200
Median rent$1,356/mo
Rent as share of income15%

In Wisconsin: 21st of 72 counties for 5-year population growth · 22nd of 72 counties for net in-migration (per resident) · 1st of 72 counties for median household income · 1st of 72 counties for median home value.

Where new residents came from

Top counties by households (tax returns) moving to Waukesha County, 2022–2023 (IRS).

FromHouseholds (tax returns)Their income (AGI)
Milwaukee County, WI4,553$401.4M
Washington County, WI590$47.5M
Racine County, WI347$26.7M
Dane County, WI342$31.1M
Jefferson County, WI332$21.4M
Walworth County, WI289$19.8M
Cook County, IL208$24.1M
Ozaukee County, WI196$21.5M

Where leavers went

Top counties by households leaving Waukesha County, 2022–2023 (IRS).

ToHouseholds (tax returns)Their income (AGI)
Milwaukee County, WI3,292$243.9M
Washington County, WI709$72.1M
Dane County, WI399$27.9M
Jefferson County, WI355$26.0M
Walworth County, WI302$29.3M
Racine County, WI283$26.0M
Cook County, IL258$17.3M
Dodge County, WI224$30.1M

BizyFi in Waukesha County

8 companies in the BizyFi directory are based here. Search them on the company map (company names with a free account), or browse Wisconsin companies.

← All Wisconsin counties · National rankings

Sources: U.S. Census Bureau population estimates (vintage 2025), American Community Survey 5-year (2024), and IRS Statistics of Income county-to-county migration data (2022–2023). Migration counts are tax returns (roughly households) moving between U.S. counties; the IRS suppresses very small flows. Growth rates, per-1,000 figures, rent share and state ranks are BizyFi calculations. Data updated 2026-10-17. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.