ZIP code 53821: Prairie du Chien, WI

ZIP code 53821 is in Prairie du Chien (70% of residents), in Crawford County (97%) and Grant County (2.7%), Wisconsin. 30% of its residents live outside city limits. It is in Wisconsin's 3rd congressional district. Its state senate district is State Senate District 17; its state house district is Assembly District 49.

7,838residents (2020 Census)

96.8 sq miland area

1cities and towns

1congressional district

14voting precincts

See it on the map All of Wisconsin

City and county

City or town	Share of ZIP residents
Prairie du Chien	70%

County	Share of ZIP residents
Crawford County	97%
Grant County	2.7%

Town or county subdivision	Share of ZIP residents
Prairie du Chien city	70%
Bridgeport town	13%
Prairie du Chien town	12%
Patch Grove town	1.6%
Wauzeka town	1.4%
Eastman town	0.8%
Millville town	0.6%
Wyalusing town	0.5%

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 17)	Howard Marklein (R)		100%
Assembly Member (Assembly District 49)	Travis Tranel (R)		100%

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

Prairie du Chien website: http://www.prairieduchien.info
Prairie du Chien laws: search for the Prairie du Chien, Wisconsin code of ordinances
Crawford County website: http://www.crawfordcountywi.org
Crawford County laws: search for the Crawford County, Wisconsin code of ordinances
Grant County website: http://www.co.grant.wi.gov
Grant County laws: search for the Grant County, Wisconsin code of ordinances

State legislative districts

State senate district	Share of ZIP residents
State Senate District 17	100%

State house district	Share of ZIP residents
Assembly District 49	100%

Voting precincts

14 voting precincts overlap ZIP 53821. 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:53821")

ZIP 53821 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.