ZIP code 54661: Trempealeau, WI

ZIP code 54661 is in Trempealeau (48% of residents), in Trempealeau County, Wisconsin. 52% of its residents live outside city limits. It is in Wisconsin's 3rd congressional district. Its state senate districts are State Senate District 10 (91%) and State Senate District 32 (8.9%); its state house districts are Assembly District 29 (91%) and Assembly District 94 (8.9%).

3,852residents (2020 Census)

51.8 sq miland area

1cities and towns

1congressional district

7voting precincts

See it on the map All of Wisconsin

City and county

City or town	Share of ZIP residents
Trempealeau	48%

County	Share of ZIP residents
Trempealeau County	100%

Town or county subdivision	Share of ZIP residents
Trempealeau village	48%
Trempealeau town	40%
Caledonia town	8.9%
Dodge town	3.0%
Arcadia town	land only

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)		91%
State Senator (State Senate District 32)	Brad Pfaff (Democratic)		8.9%
Assembly Member (Assembly District 29)	Treig Pronschinske (R)		91%
Assembly Member (Assembly District 94)	Steve Doyle (Democratic)		8.9%

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

Trempealeau website: https://trempealeauwi.gov
Trempealeau laws: search for the Trempealeau, Wisconsin code of ordinances
Trempealeau County website: http://www.tremplocounty.com
Trempealeau County laws: search for the Trempealeau County, Wisconsin code of ordinances

State legislative districts

State senate district	Share of ZIP residents
State Senate District 10	91%
State Senate District 32	8.9%

State house district	Share of ZIP residents
Assembly District 29	91%
Assembly District 94	8.9%

Voting precincts

7 voting precincts overlap ZIP 54661. 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:54661")

ZIP 54661 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.