Boundary Atlas

ZIP code 52305: Martelle, IA

ZIP code 52305 is in Martelle (38% of residents), in Jones County (88%) and Linn County (12%), Iowa. 62% of its residents live outside city limits. It is in Iowa's 1st congressional district (88%) and Iowa's 2nd congressional district (12%). Its state senate districts are State Senate District 33 (88%) and State Senate District 42 (12%); its state house districts are State House District 66 (88%) and State House District 83 (12%).

663residents (2020 Census)
27.1 sq miland area
1cities and towns
2congressional districts
3voting precincts

See it on the mapAll of Iowa

City and county

City or townShare of ZIP residents
Martelle38%

CountyShare of ZIP residents
Jones County88%
Linn County12%

Town or county subdivisionShare of ZIP residents
Greenfield township63%
Fairview township25%
Linn township12%

Congressional districts

Congressional districtShare of ZIP residents
Iowa's 1st congressional district (IA-01)88%
Iowa's 2nd congressional district (IA-02)12%

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)202-225-657688%
U.S. Representative (IA-02)Ashley Hinson (R)202-225-291112%
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 33)Carrie Koelker (R)88%
State Senator (State Senate District 42)Charlie McClintock (R)12%
State Representative (State House District 66)Steve Bradley (R)88%
State Representative (State House District 83)Cindy Golding (R)12%

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 3388%
State Senate District 4212%

State house districtShare of ZIP residents
State House District 6688%
State House District 8312%

Voting precincts

3 voting precincts overlap ZIP 52305. 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:52305")

ZIP 52305 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.