Boundary Atlas

ZIP code 50479: Thornton, IA

ZIP code 50479 is in Thornton (60% of residents), in Cerro Gordo County (90%) and Franklin County (9.8%), Iowa. 40% of its residents live outside city limits. It is in Iowa's 2nd congressional district (90%) and Iowa's 4th congressional district (9.8%). Its state senate districts are State Senate District 30 (90%) and State Senate District 28 (9.8%); its state house districts are State House District 60 (82%), State House District 55 (9.8%) and State House District 59 (8.7%).

667residents (2020 Census)
58.2 sq miland area
1cities and towns
2congressional districts
5voting precincts

See it on the mapAll of Iowa

City and county

City or townShare of ZIP residents
Thornton60%

CountyShare of ZIP residents
Cerro Gordo County90%
Franklin County9.8%

Town or county subdivisionShare of ZIP residents
Grimes township73%
Pleasant Valley township15%
Wisner township6.5%
Richland township3.3%
Union township2.5%

Congressional districts

Congressional districtShare of ZIP residents
Iowa's 2nd congressional district (IA-02)90%
Iowa's 4th congressional district (IA-04)9.8%

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

OfficeMemberContactShare of residents
U.S. Representative (IA-02)Ashley Hinson (R)202-225-291190%
U.S. Representative (IA-04)Randy Feenstra (R)202-225-44269.8%
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 30)Doug Campbell (R)90%
State Senator (State Senate District 28)Dennis Guth (R)9.8%
State Representative (State House District 60)Jane Bloomingdale (R)82%
State Representative (State House District 55)Shannon Latham (R)9.8%
State Representative (State House District 59)Christian Hermanson (R)8.7%

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 3090%
State Senate District 289.8%

State house districtShare of ZIP residents
State House District 6082%
State House District 559.8%
State House District 598.7%

Voting precincts

5 voting precincts overlap ZIP 50479. Map them, with each precinct's share of the ZIP's residents.

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ZIP 50479 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.