ZIP code 53120: East Troy, WI
ZIP code 53120 is in East Troy (47% of residents) and Potter Lake (11%), in Walworth County (97%) and Racine County (3.2%), Wisconsin. 42% of its residents live outside city limits. It is in Wisconsin's 5th congressional district (76%) and Wisconsin's 1st congressional district (24%). Its state senate districts are State Senate District 11 (97%) and State Senate District 28 (3.4%); its state house districts are Assembly District 33 (96%), Assembly District 84 (3.4%) and Assembly District 31 (0.8%).
See it on the mapAll of Wisconsin
City and county
| City or town | Share of ZIP residents |
|---|---|
| East Troy | 47% |
| Potter Lake | 11% |
| Mukwonago | 0.2% |
| County | Share of ZIP residents |
|---|---|
| Walworth County | 97% |
| Racine County | 3.2% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| East Troy village | 47% |
| East Troy town | 31% |
| Troy town | 18% |
| Waterford town | 3.2% |
| La Grange town | 0.8% |
| Mukwonago village | 0.2% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Wisconsin's 5th congressional district (WI-05) | 76% |
| Wisconsin's 1st congressional district (WI-01) | 24% |
This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (WI-05) | Scott Fitzgerald (R) | 202-225-5101 | 76% |
| U.S. Representative (WI-01) | Bryan Steil (R) | 202-225-3031 | 24% |
| U.S. Senator | Ron Johnson (R) | 202-224-5323 · contact form | statewide |
| U.S. Senator | Tammy Baldwin (D) | 202-224-5653 · contact form | statewide |
| State Senator (State Senate District 11) | Steve Nass (R) | 97% | |
| State Senator (State Senate District 28) | Julian Bradley (R) | 3.4% | |
| Assembly Member (Assembly District 33) | Robin Vos (R) | 96% | |
| Assembly Member (Assembly District 84) | Chuck Wichgers (R) | 3.4% | |
| Assembly Member (Assembly District 31) | Tyler August (R) | 0.8% |
Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).
Local government
- East Troy laws: search for the East Troy, Wisconsin code of ordinances
- Potter Lake laws: search for the Potter Lake, Wisconsin code of ordinances
- Walworth County website: http://www.co.walworth.wi.us
- Walworth County laws: search for the Walworth County, Wisconsin code of ordinances
- Racine County laws: search for the Racine County, Wisconsin code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 11 | 97% |
| State Senate District 28 | 3.4% |
| State house district | Share of ZIP residents |
|---|---|
| Assembly District 33 | 96% |
| Assembly District 84 | 3.4% |
| Assembly District 31 | 0.8% |
Voting precincts
20 voting precincts overlap ZIP 53120. 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:53120")
ZIP 53120 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.