Boundary Atlas

ZIP code 52738: Columbus Junction, IA

ZIP code 52738 is in Columbus Junction (54% of residents), Fredonia (6.5%) and Cotter (1.1%), in Louisa County (99%) and Washington County (1.1%), Iowa. 39% of its residents live outside city limits. It is in Iowa's 1st congressional district. Its state senate districts are State Senate District 48 (99%) and State Senate District 46 (1.1%); its state house districts are State House District 95 (99%) and State House District 92 (1.1%).

3,404residents (2020 Census)
122.5 sq miland area
3cities and towns
1congressional district
7voting precincts

See it on the mapAll of Iowa

City and county

City or townShare of ZIP residents
Columbus Junction54%
Fredonia6.5%
Cotter1.1%

CountyShare of ZIP residents
Louisa County99%
Washington County1.1%

Town or county subdivisionShare of ZIP residents
Columbus City township70%
Concord township16%
Union township6.6%
Elm Grove township2.3%
Grandview township1.8%
Marshall township1.0%
Highland township1.0%
Wapello township0.9%
Crawford township0.1%

Congressional district

Congressional districtShare of ZIP residents
Iowa's 1st congressional district (IA-01)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IA-01)Mariannette Miller-Meeks (R)202-225-6576100%
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 48)Mark Lofgren (R)99%
State Senator (State Senate District 46)Dawn Driscoll (R)1.1%
State Representative (State House District 95)Taylor Collins (R)99%
State Representative (State House District 92)Heather Hora (R)1.1%

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 4899%
State Senate District 461.1%

State house districtShare of ZIP residents
State House District 9599%
State House District 921.1%

Voting precincts

7 voting precincts overlap ZIP 52738. Map them, with each precinct's share of the ZIP's residents.

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ZIP 52738 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.