Boundary Atlas

ZIP code 50635: Gladbrook, IA

ZIP code 50635 is in Gladbrook (58% of residents), in Tama County (98%) and Marshall County (2.5%), Iowa. 42% of its residents live outside city limits. It is in Iowa's 2nd congressional district (98%) and Iowa's 4th congressional district (2.5%). Its state senate districts are State Senate District 27 (98%) and State Senate District 26 (2.5%); its state house districts are State House District 53 (98%) and State House District 51 (2.5%).

1,375residents (2020 Census)
82.8 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
Gladbrook58%

CountyShare of ZIP residents
Tama County98%
Marshall County2.5%

Town or county subdivisionShare of ZIP residents
Spring Creek township76%
Lincoln township14%
Crystal township3.1%
Carlton township2.6%
Grant township2.6%
Vienna township2.5%

Congressional districts

Congressional districtShare of ZIP residents
Iowa's 2nd congressional district (IA-02)98%
Iowa's 4th congressional district (IA-04)2.5%

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-02)Ashley Hinson (R)202-225-291198%
U.S. Representative (IA-04)Randy Feenstra (R)202-225-44262.5%
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 27)Annette Sweeney (R)98%
State Senator (State Senate District 26)Kara Warme (R)2.5%
State Representative (State House District 53)Dean Fisher (R)98%
State Representative (State House District 51)Brett Barker (R)2.5%

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 2798%
State Senate District 262.5%

State house districtShare of ZIP residents
State House District 5398%
State House District 512.5%

Voting precincts

4 voting precincts overlap ZIP 50635. 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:50635")

ZIP 50635 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.