Boundary Atlas

ZIP code 50651: La Porte City, IA

ZIP code 50651 is in La Porte City (64% of residents), in Black Hawk County (93%), Benton County (6.6%) and Tama County (0.8%), Iowa. 36% of its residents live outside city limits. It is in Iowa's 2nd congressional district. Its state senate districts are State Senate District 38 (99%) and State Senate District 34 (1.1%); its state house districts are State House District 76 (99%) and State House District 68 (1.1%).

3,579residents (2020 Census)
114.5 sq miland area
1cities and towns
1congressional district
6voting precincts

See it on the mapAll of Iowa

City and county

City or townShare of ZIP residents
La Porte City64%

CountyShare of ZIP residents
Black Hawk County93%
Benton County6.6%
Tama County0.8%

Town or county subdivisionShare of ZIP residents
Big Creek township71%
Spring Creek township9.1%
Cedar township6.2%
Bruce township5.5%
Poyner township3.5%
Eagle township1.5%
Fox township1.1%
Cedar township1.1%
Geneseo township0.8%

Congressional district

Congressional districtShare of ZIP residents
Iowa's 2nd congressional district (IA-02)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IA-02)Ashley Hinson (R)202-225-2911100%
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 38)Dave Sires (R)99%
State Senator (State Senate District 34)Dan Zumbach (R)1.1%
State Representative (State House District 76)Derek Wulf (R)99%
State Representative (State House District 68)Chad Ingels (R)1.1%

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 3899%
State Senate District 341.1%

State house districtShare of ZIP residents
State House District 7699%
State House District 681.1%

Voting precincts

6 voting precincts overlap ZIP 50651. 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:50651")

ZIP 50651 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.