Boundary Atlas

ZIP code 50475: Sheffield, IA

ZIP code 50475 is in Sheffield (70% of residents) and Chapin (2.2%), in Franklin County (92%) and Cerro Gordo County (7.5%), Iowa. 28% of its residents live outside city limits. It is in Iowa's 4th congressional district (92%) and Iowa's 2nd congressional district (7.5%). Its state senate districts are State Senate District 28 (92%) and State Senate District 30 (7.5%); its state house districts are State House District 55 (92%) and State House District 59 (7.5%).

1,621residents (2020 Census)
95.1 sq miland area
2cities and towns
2congressional districts
5voting precincts

See it on the mapAll of Iowa

City and county

City or townShare of ZIP residents
Sheffield70%
Chapin2.2%

CountyShare of ZIP residents
Franklin County92%
Cerro Gordo County7.5%

Town or county subdivisionShare of ZIP residents
Sheffield city70%
Ross township13%
Richland township6.3%
Pleasant Valley township3.8%
West Fork township3.5%
Geneseo township3.4%
Marion township0.4%
Dougherty township0.3%
Mott townshipland only

Congressional districts

Congressional districtShare of ZIP residents
Iowa's 4th congressional district (IA-04)92%
Iowa's 2nd congressional district (IA-02)7.5%

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-04)Randy Feenstra (R)202-225-442692%
U.S. Representative (IA-02)Ashley Hinson (R)202-225-29117.5%
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 28)Dennis Guth (R)92%
State Senator (State Senate District 30)Doug Campbell (R)7.5%
State Representative (State House District 55)Shannon Latham (R)92%
State Representative (State House District 59)Christian Hermanson (R)7.5%

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 2892%
State Senate District 307.5%

State house districtShare of ZIP residents
State House District 5592%
State House District 597.5%

Voting precincts

5 voting precincts overlap ZIP 50475. 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:50475")

ZIP 50475 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.