Boundary Atlas

ZIP code 50046: Cambridge, IA

ZIP code 50046 is in Cambridge (52% of residents), in Story County (82%) and Polk County (18%), Iowa. 48% of its residents live outside city limits. It is in Iowa's 4th congressional district (82%) and Iowa's 3rd congressional district (18%). Its state senate districts are State Senate District 26 (82%) and State Senate District 23 (18%); its state house districts are State House District 51 (82%) and State House District 45 (18%).

1,586residents (2020 Census)
47.5 sq miland area
2cities and towns
2congressional districts
4voting precincts

See it on the mapAll of Iowa

City and county

City or townShare of ZIP residents
Cambridge52%
Huxley0.7%

CountyShare of ZIP residents
Story County82%
Polk County18%

Town or county subdivisionShare of ZIP residents
Union township80%
Elkhart township18%
Palestine township1.3%

Congressional districts

Congressional districtShare of ZIP residents
Iowa's 4th congressional district (IA-04)82%
Iowa's 3rd congressional district (IA-03)18%

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)202-225-442682%
U.S. Representative (IA-03)Zachary Nunn (R)202-225-547618%
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 26)Kara Warme (R)82%
State Senator (State Senate District 23)Jack Whitver (R)18%
State Representative (State House District 51)Brett Barker (R)82%
State Representative (State House District 45)Brian Lohse (R)18%

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 2682%
State Senate District 2318%

State house districtShare of ZIP residents
State House District 5182%
State House District 4518%

Voting precincts

4 voting precincts overlap ZIP 50046. 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:50046")

ZIP 50046 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.