Wisconsin's 1st congressional district (WI-01)
Wisconsin's 1st congressional district (WI-01) covers parts or all of Kenosha County, Racine County, Walworth County, Rock County and Milwaukee County, and 59 ZIP codes (42 wholly inside it). Its 2020 population was 736,715. This is the map in force for the November 3, 2026 election.
Who represents WI-01
| Office | Member | Contact |
|---|---|---|
| U.S. Representative (WI-01) | Bryan Steil (R) | 202-225-3031 |
| U.S. Senator | Ron Johnson (R) | 202-224-5323 · contact form |
| U.S. Senator | Tammy Baldwin (D) | 202-224-5653 · contact form |
Officials serving now (members of Congress until January 3, 2027). Sources: Members of Congress: the @unitedstates project, congress-legislators (CC0).
Counties
| County | Share of the county's residents in WI-01 |
|---|---|
| Kenosha County | 100% |
| Racine County | 100% |
| Walworth County | 92% |
| Rock County | 78% |
| Milwaukee County | 15% |
ZIP codes
Percentages mark ZIPs only partly in WI-01: the share of that ZIP's residents inside it.
- 53104
- 53105 (99%)
- 53108
- 53110
- 53114
- 53115
- 53119 (6.6%)
- 53120 (24%)
- 53121
- 53125
- 53126
- 53128
- 53129 (100%)
- 53130
- 53132
- 53139
- 53140
- 53142
- 53143
- 53144
- 53147
- 53149 (1.4%)
- 53150 (1.5%)
- 53154
- 53157
- 53158
- 53167
- 53168
- 53170
- 53172
- 53176
- 53177
- 53179
- 53181
- 53182
- 53184
- 53185
- 53190 (79%)
- 53191
- 53192
- 53195
- 53220 (0.2%)
- 53221 (1.6%)
- 53235 (100%)
- 53402
- 53403
- 53404
- 53405
- 53406
- 53505
- 53511 (83%)
- 53525
- 53534 (8.4%)
- 53538 (0.7%)
- 53545 (98%)
- 53546 (95%)
- 53548 (87%)
- 53563 (99%)
- 53585
Towns
Bloomfield town, Bloomfield village, Bradford town, Brighton town, Bristol village, Burlington city, Burlington city, Burlington town, Caledonia village, Clinton town, Clinton village, Cudahy city, Darien town, Darien village, Delavan city, Delavan town, Dover town, Elkhorn city, Elmwood Park village, Fontana-on-Geneva Lake village, Franklin city, Geneva town, Genoa City village, Genoa City village, Greendale village, Hales Corners village, Harmony town, Janesville city, Johnstown town, Kenosha city, La Grange town, Lafayette town, Lake Geneva city, Lima town, Linn town, Lyons town, Milton city, Milton town, Mount Pleasant village and North Bay village and others.
Get this in your AI agent
Your agent can draw every precinct in WI-01, or list them with population shares (related_geographies). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
get_boundaries(id="us:congressional_district:5501", children_level="precinct", include_districts=True)