Boundary Atlas

ZIP code 51001: Akron, IA

ZIP code 51001 is in Akron (60% of residents), in Plymouth County (86%) and Union County (14%), Iowa. 40% of its residents live outside city limits. It is in Iowa's 4th congressional district (86%) and South Dakota's at-large congressional district (14%). Its state senate districts are State Senate District 2 (86%), State Senate District 16 (12%) and State Senate District 17 (1.2%); its state house districts are State House District 3 (86%), State House District 16 (12%) and State House District 17 (1.2%).

2,615residents (2020 Census)
165.2 sq miland area
1cities and towns
2congressional districts
6voting precincts

See it on the mapAll of Iowa

City and county

City or townShare of ZIP residents
Akron60%

CountyShare of ZIP residents
Plymouth County86%
Union County14%

Town or county subdivisionShare of ZIP residents
Portland township71%
Sioux Valley township8.3%
Westfield township6.4%
Preston township6.0%
Johnson township3.1%
Spink township3.0%
Richland UT1.2%
Big Springs township0.9%
Virginia township0.2%

Congressional districts

Congressional districtShare of ZIP residents
Iowa's 4th congressional district (IA-04)86%
South Dakota's at-large congressional district (SD-AL)14%

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.

State legislative districts

State senate districtShare of ZIP residents
State Senate District 286%
State Senate District 1612%
State Senate District 171.2%

State house districtShare of ZIP residents
State House District 386%
State House District 1612%
State House District 171.2%

Voting precincts

6 voting precincts overlap ZIP 51001. It also crosses into SD. 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:51001")

ZIP 51001 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.