Boundary Atlas

ZIP code 50645: Ionia, IA

ZIP code 50645 is in Ionia (20% of residents) and Bassett (4.0%), in Chickasaw County (91%), Bremer County (6.4%) and Floyd County (2.9%), Iowa. 76% of its residents live outside city limits. It is in Iowa's 2nd congressional district. Its state senate district is State Senate District 29; its state house district is State House District 58.

1,124residents (2020 Census)
85.6 sq miland area
2cities and towns
1congressional district
5voting precincts

See it on the mapAll of Iowa

City and county

City or townShare of ZIP residents
Ionia20%
Bassett4.0%

CountyShare of ZIP residents
Chickasaw County91%
Bremer County6.4%
Floyd County2.9%

Town or county subdivisionShare of ZIP residents
Chickasaw township53%
Deerfield township18%
Richland township15%
Douglas township6.4%
Dayton township3.5%
Niles township2.9%
Washington township1.1%

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 29)Sandy Salmon (R)100%
State Representative (State House District 58)Charley Thomson (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 29100%

State house districtShare of ZIP residents
State House District 58100%

Voting precincts

5 voting precincts overlap ZIP 50645. Map them, with each precinct's share of the ZIP's residents.

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ZIP 50645 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.