Boundary Atlas

ZIP code 50228: Prairie City, IA

ZIP code 50228 is in Prairie City (68% of residents), in Jasper County (96%), Marion County (3.0%) and Polk County (1.0%), Iowa. 32% of its residents live outside city limits. It is in Iowa's 1st congressional district (99%) and Iowa's 3rd congressional district (1.0%). Its state senate districts are State Senate District 19 (99%) and State Senate District 23 (1.0%); its state house districts are State House District 37 (91%), State House District 38 (7.7%) and State House District 45 (1.0%).

2,509residents (2020 Census)
69.3 sq miland area
1cities and towns
2congressional districts
5voting precincts

See it on the mapAll of Iowa

City and county

City or townShare of ZIP residents
Prairie City68%

CountyShare of ZIP residents
Jasper County96%
Marion County3.0%
Polk County1.0%

Town or county subdivisionShare of ZIP residents
Des Moines township85%
Mound Prairie township4.1%
Washington township3.9%
Red Rock township3.0%
Fairview township2.6%
Camp township1.0%

Congressional districts

Congressional districtShare of ZIP residents
Iowa's 1st congressional district (IA-01)99%
Iowa's 3rd congressional district (IA-03)1.0%

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)202-225-657699%
U.S. Representative (IA-03)Zachary Nunn (R)202-225-54761.0%
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 19)Ken Rozenboom (R)99%
State Senator (State Senate District 23)Jack Whitver (R)1.0%
State Representative (State House District 37)Barb Kniff McCulla (R)91%
State Representative (State House District 45)Brian Lohse (R)1.0%

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 1999%
State Senate District 231.0%

State house districtShare of ZIP residents
State House District 3791%
State House District 387.7%
State House District 451.0%

Voting precincts

5 voting precincts overlap ZIP 50228. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

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:50228")

ZIP 50228 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.