Boundary Atlas

ZIP code 53017: Richfield, WI

ZIP code 53017 is in Richfield (70% of residents), Lisbon (14%) and Germantown (9.1%), in Washington County (83%) and Waukesha County (17%), Wisconsin. 6.8% of its residents live outside city limits. It is in Wisconsin's 5th congressional district. Its state senate districts are State Senate District 33 (99%) and State Senate District 8 (0.8%); its state house districts are Assembly District 98 (96%), Assembly District 99 (3.2%) and Assembly District 24 (0.8%).

5,496residents (2020 Census)
17.2 sq miland area
3cities and towns
1congressional district
12voting precincts

See it on the mapAll of Wisconsin

City and county

City or townShare of ZIP residents
Richfield70%
Lisbon14%
Germantown9.1%

CountyShare of ZIP residents
Washington County83%
Waukesha County17%

Town or county subdivisionShare of ZIP residents
Richfield village70%
Lisbon village14%
Germantown village9.1%
Erin town3.5%
Merton town3.2%

Congressional district

Congressional districtShare of ZIP residents
Wisconsin's 5th congressional district (WI-05)100%

Members of Congress

OfficeMemberContact
U.S. Representative (WI-05)Scott Fitzgerald (R)202-225-5101
U.S. SenatorRon Johnson (R)202-224-5323 · contact form
U.S. SenatorTammy Baldwin (D)202-224-5653 · contact form

Members serving now (119th Congress, until January 3, 2027). Source: Members of Congress: the @unitedstates project, congress-legislators (CC0).

State legislative districts

State senate districtShare of ZIP residents
State Senate District 3399%
State Senate District 80.8%

State house districtShare of ZIP residents
Assembly District 9896%
Assembly District 993.2%
Assembly District 240.8%

Voting precincts

12 voting precincts overlap ZIP 53017. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:53017")

ZIP 53017 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.