ZIP code 54603: La Crosse, WI

ZIP code 54603 is in La Crosse (70% of residents) and French Island (30%), in La Crosse County, Wisconsin. It is in Wisconsin's 3rd congressional district. Its state senate district is State Senate District 32; its state house districts are Assembly District 95 (84%) and Assembly District 94 (16%).

14,203residents (2020 Census)

8.9 sq miland area

2cities and towns

1congressional district

15voting precincts

See it on the map All of Wisconsin

City and county

City or town	Share of ZIP residents
La Crosse	70%
French Island	30%

County	Share of ZIP residents
La Crosse County	100%

Town or county subdivision	Share of ZIP residents
La Crosse city	70%
Campbell town	30%
Medary town	land only
Onalaska 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 32)	Brad Pfaff (Democratic)		100%
Assembly Member (Assembly District 95)	Jill Billings (Democratic)		84%
Assembly Member (Assembly District 94)	Steve Doyle (Democratic)		16%

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

La Crosse website: https://www.cityoflacrosse.org/
La Crosse laws: search for the La Crosse, Wisconsin code of ordinances
French Island laws: search for the French Island, Wisconsin code of ordinances
La Crosse County website: http://www.co.la-crosse.wi.us
La Crosse County laws: search for the La Crosse County, Wisconsin code of ordinances

State legislative districts

State senate district	Share of ZIP residents
State Senate District 32	100%

State house district	Share of ZIP residents
Assembly District 95	84%
Assembly District 94	16%

Voting precincts

15 voting precincts overlap ZIP 54603. 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:54603")

ZIP 54603 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.