Boundary Atlas

ZIP code 52161: Ossian, IA

ZIP code 52161 is in Ossian (57% of residents), in Winneshiek County (96%) and Fayette County (4.1%), Iowa. 43% 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.

1,409residents (2020 Census)
53.1 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
Ossian57%

CountyShare of ZIP residents
Winneshiek County96%
Fayette County4.1%

Town or county subdivisionShare of ZIP residents
Military township85%
Bloomfield township5.3%
Dover township4.1%
Frankville township3.9%
Springfield township1.4%

Congressional district

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

Members of Congress

OfficeMemberContact
U.S. Representative (IA-02)Ashley Hinson (R)202-225-2911
U.S. SenatorChuck Grassley (R)202-224-3744 · contact form
U.S. SenatorJoni Ernst (R)202-224-3254 · contact form

Members serving now (119th Congress, until January 3, 2027). Source: Members of Congress: the @unitedstates project, congress-legislators (CC0).

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 52161. Map them, with each precinct's share of the ZIP's residents.

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Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:52161")

ZIP 52161 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.