Boundary Atlas

ZIP code 50104: Gibson, IA

ZIP code 50104 is in Gibson (47% of residents), in Keokuk County (84%), Poweshiek County (11%) and Mahaska County (5.3%), Iowa. 53% of its residents live outside city limits. It is in Iowa's 1st congressional district (89%) and Iowa's 2nd congressional district (11%). Its state senate districts are State Senate District 44 (89%) and State Senate District 27 (11%); its state house districts are State House District 88 (89%) and State House District 53 (11%).

133residents (2020 Census)
15.1 sq miland area
1cities and towns
2congressional districts
4voting precincts

See it on the mapAll of Iowa

City and county

City or townShare of ZIP residents
Gibson47%

CountyShare of ZIP residents
Keokuk County84%
Poweshiek County11%
Mahaska County5.3%

Town or county subdivisionShare of ZIP residents
Prairie township84%
Deep River township8.3%
Pleasant Grove township5.3%
Jackson township2.3%

Congressional districts

Congressional districtShare of ZIP residents
Iowa's 1st congressional district (IA-01)89%
Iowa's 2nd congressional district (IA-02)11%

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-01)Mariannette Miller-Meeks (R)202-225-657689%
U.S. Representative (IA-02)Ashley Hinson (R)202-225-291111%
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 44)Adrian Dickey (R)89%
State Senator (State Senate District 27)Annette Sweeney (R)11%
State Representative (State House District 88)Helena Hayes (R)89%
State Representative (State House District 53)Dean Fisher (R)11%

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 4489%
State Senate District 2711%

State house districtShare of ZIP residents
State House District 8889%
State House District 5311%

Voting precincts

4 voting precincts overlap ZIP 50104. 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:50104")

ZIP 50104 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.