Waukesha County, Wisconsin
What we have for Waukesha County today, and what is coming.
Basics
- County code (FIPS): 55133
- Land area: 550 square miles
- Population: 406,978
Federal money spent here
Fiscal year 2026: $3.5 billion in federal contracts, grants, loans and other awards for work done in Waukesha County.
Who represents Waukesha County
U.S. Senate (whole state): Tammy Baldwin (Democrat), Ron Johnson (Republican).
U.S. House districts that include part of this county
| District | Member | Share of county land |
|---|---|---|
| Congressional District 5 | Scott Fitzgerald (Republican) | 100% |
State senate districts
| District | Member | Share of county land |
|---|---|---|
| State Senate District 33 | Chris Kapenga (Republican) | 53% |
| State Senate District 28 | Julian Bradley (Republican) | 29.2% |
| State Senate District 5 | Rob Hutton (Republican) | 11.1% |
| State Senate District 8 | Jodi Habush Sinykin (Democratic) | 6.6% |
State house / assembly districts
| District | Member | Share of county land |
|---|---|---|
| Assembly District 97 | Cindi Duchow (Republican) | 32.4% |
| Assembly District 84 | Chuck Wichgers (Republican) | 14% |
| Assembly District 99 | Barbara Dittrich (Republican) | 13.7% |
| Assembly District 83 | Dave Maxey (Republican) | 9.9% |
| Assembly District 15 | Adam Neylon (Republican) | 8.4% |
| Assembly District 98 | Jim Piwowarczyk (Republican) | 6.9% |
| Assembly District 24 | Dan Knodl (Republican) | 6.6% |
| Assembly District 82 | Scott Allen (Republican) | 5.4% |
| Assembly District 13 | Robyn Vining (Democratic) | 2.7% |
Matched by district number using the U.S. Census Bureau 2020 county–district relationship files (land area overlap; districts may have been redrawn since). Your exact district depends on your address: U.S. House · state legislators.
County government
Find the official county website and contacts in the USA.gov local government directory or the National Association of Counties explorer.
Coming next for counties: county commission meetings and agendas, county budgets, local ballot measures and election results. We add each one as soon as a public, reliable feed exists for it. Know a good source? Tell us.
Sources: U.S. Census Bureau Gazetteer (county list, public domain); USAspending.gov (U.S. Treasury). Built 2026-11-03 15:28.