ZIP code 54443: Eau Pleine, WI
ZIP code 54443 is in Junction City (18% of residents), in Portage County (98%), Marathon County (1.2%) and Wood County (0.9%), Wisconsin. 82% of its residents live outside city limits. It is in Wisconsin's 3rd congressional district (99%) and Wisconsin's 7th congressional district (1.2%). Its state senate district is State Senate District 29; its state house districts are Assembly District 86 (99%) and Assembly District 87 (1.2%).
See it on the mapAll of Wisconsin
City and county
| City or town | Share of ZIP residents |
|---|---|
| Junction City | 18% |
| County | Share of ZIP residents |
|---|---|
| Portage County | 98% |
| Marathon County | 1.2% |
| Wood County | 0.9% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Eau Pleine town | 45% |
| Carson town | 35% |
| Junction City village | 18% |
| Knowlton town | 1.2% |
| Milladore town | 0.9% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Wisconsin's 3rd congressional district (WI-03) | 99% |
| Wisconsin's 7th congressional district (WI-07) | 1.2% |
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-03) | Derrick Van Orden (R) | 202-225-5506 | 99% |
| U.S. Representative (WI-07) | Thomas P. Tiffany (R) | 202-225-3365 | 1.2% |
| 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 29) | Cory Tomczyk (R) | 100% | |
| Assembly Member (Assembly District 86) | John Spiros (R) | 99% | |
| Assembly Member (Assembly District 87) | Brent Jacobson (R) | 1.2% |
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
- Junction City website: https://junctioncitywisconsin.gov
- Junction City laws: search for the Junction City, Wisconsin code of ordinances
- Portage County website: http://www.co.portage.wi.us
- Portage County laws: search for the Portage County, Wisconsin code of ordinances
- Marathon County website: http://www.co.marathon.wi.us
- Marathon County laws: search for the Marathon County, Wisconsin code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 29 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| Assembly District 86 | 99% |
| Assembly District 87 | 1.2% |
Voting precincts
7 voting precincts overlap ZIP 54443. 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:54443")
ZIP 54443 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.