ZIP code 54003: Martell, WI
ZIP code 54003 is in Pierce County, Wisconsin, outside any city or Census-designated place. It is in Wisconsin's 3rd congressional district. Its state senate district is State Senate District 10; its state house districts are Assembly District 28 (54%), Assembly District 29 (39%) and Assembly District 30 (7.6%).
See it on the mapAll of Wisconsin
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Pierce County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Martell town | 47% |
| Trimbelle town | 17% |
| Ellsworth town | 13% |
| El Paso town | 8.1% |
| River Falls town | 7.6% |
| Gilman town | 7.0% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Wisconsin's 3rd congressional district (WI-03) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (WI-03) | Derrick Van Orden (R) | 202-225-5506 | 100% |
| 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 10) | Rob Stafsholt (R) | 100% | |
| Assembly Member (Assembly District 28) | Rob Kreibich (R) | 54% | |
| Assembly Member (Assembly District 29) | Treig Pronschinske (R) | 39% | |
| Assembly Member (Assembly District 30) | Shannon Zimmerman (R) | 7.6% |
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
- Pierce County website: https://www.co.pierce.wi.us/
- Pierce County laws: search for the Pierce County, Wisconsin code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 10 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| Assembly District 28 | 54% |
| Assembly District 29 | 39% |
| Assembly District 30 | 7.6% |
Voting precincts
9 voting precincts overlap ZIP 54003. 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:54003")
ZIP 54003 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.