Boundary Atlas

ZIP code 51527: Defiance, IA

ZIP code 51527 is in Defiance (52% of residents), in Shelby County (92%) and Crawford County (8.0%), Iowa. 48% of its residents live outside city limits. It is in Iowa's 4th congressional district. Its state senate district is State Senate District 6; its state house districts are State House District 12 (96%) and State House District 11 (4.0%).

475residents (2020 Census)
42.3 sq miland area
1cities and towns
1congressional district
4voting precincts

See it on the mapAll of Iowa

City and county

City or townShare of ZIP residents
Defiance52%

CountyShare of ZIP residents
Shelby County92%
Crawford County8.0%

Town or county subdivisionShare of ZIP residents
Union township77%
Greeley township11%
Washington township8.0%
Douglas township4.0%

Congressional district

Congressional districtShare of ZIP residents
Iowa's 4th congressional district (IA-04)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IA-04)Randy Feenstra (R)202-225-4426100%
U.S. SenatorChuck Grassley (R)202-224-3744 · contact formstatewide
U.S. SenatorJoni Ernst (R)202-224-3254 · contact formstatewide
State Senator (State Senate District 6)Jason Schultz (R)100%
State Representative (State House District 12)Steven Holt (R)96%
State Representative (State House District 11)Craig Williams (R)4.0%

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

State legislative districts

State senate districtShare of ZIP residents
State Senate District 6100%

State house districtShare of ZIP residents
State House District 1296%
State House District 114.0%

Voting precincts

4 voting precincts overlap ZIP 51527. Map them, with each precinct's share of the ZIP's residents.

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ZIP 51527 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.