Boundary Atlas

ZIP code 51346: Hartley, IA

ZIP code 51346 is in Hartley (68% of residents), in O'Brien County (92%), Osceola County (5.0%) and Clay County (2.8%), Iowa. 32% of its residents live outside city limits. It is in Iowa's 4th congressional district. Its state senate districts are State Senate District 3 (100%) and State Senate District 5 (0.2%); its state house districts are State House District 5 (97%), State House District 6 (2.6%) and State House District 10 (0.2%).

2,343residents (2020 Census)
146.2 sq miland area
1cities and towns
1congressional district
7voting precincts

See it on the mapAll of Iowa

City and county

City or townShare of ZIP residents
Hartley68%

CountyShare of ZIP residents
O'Brien County92%
Osceola County5.0%
Clay County2.8%

Town or county subdivisionShare of ZIP residents
Hartley township76%
Omega township8.1%
Lincoln township4.1%
Harrison township3.8%
Grant township2.4%
Lone Tree township2.2%
Center township1.6%
Baker township1.3%
Clay township0.4%
Waterford township0.2%

Congressional district

Congressional districtShare of ZIP residents
Iowa's 4th congressional district (IA-04)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IA-04)Randy Feenstra (R)202-225-4426100%
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 3)Lynn Evans (R)100%
State Senator (State Senate District 5)Dave Rowley (R)0.2%
State Representative (State House District 5)Zach Dieken (R)97%
State Representative (State House District 6)Megan Jones (R)2.6%
State Representative (State House District 10)John Wills (R)0.2%

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 3100%
State Senate District 50.2%

State house districtShare of ZIP residents
State House District 597%
State House District 62.6%
State House District 100.2%

Voting precincts

7 voting precincts overlap ZIP 51346. 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:

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ZIP 51346 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.