Boundary Atlas

ZIP code 52133: Castalia, IA

ZIP code 52133 is in Castalia (31% of residents), in Winneshiek County (87%) and Fayette County (13%), Iowa. 69% of its residents live outside city limits. It is in Iowa's 2nd congressional district. Its state senate district is State Senate District 32; its state house district is State House District 63.

473residents (2020 Census)
43.7 sq miland area
1cities and towns
1congressional district
3voting precincts

See it on the mapAll of Iowa

City and county

City or townShare of ZIP residents
Castalia31%

CountyShare of ZIP residents
Winneshiek County87%
Fayette County13%

Town or county subdivisionShare of ZIP residents
Bloomfield township83%
Clermont township9.7%
Frankville township4.4%
Dover township3.0%

Congressional district

Congressional districtShare of ZIP residents
Iowa's 2nd congressional district (IA-02)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IA-02)Ashley Hinson (R)202-225-2911100%
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 32)Mike Klimesh (R)100%
State Representative (State House District 63)Michael Bergan (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

State legislative districts

State senate districtShare of ZIP residents
State Senate District 32100%

State house districtShare of ZIP residents
State House District 63100%

Voting precincts

3 voting precincts overlap ZIP 52133. Map them, with each precinct's share of the ZIP's residents.

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ZIP 52133 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.