Boundary Atlas

ZIP code 50830: Afton, IA

ZIP code 50830 is in Afton (52% of residents) and Arispe (3.5%), in Union County, Iowa. 44% of its residents live outside city limits. It is in Iowa's 3rd congressional district. Its state senate districts are State Senate District 9 (86%) and State Senate District 12 (14%); its state house districts are State House District 17 (86%) and State House District 23 (14%).

1,667residents (2020 Census)
121.5 sq miland area
2cities and towns
1congressional district
5voting precincts

See it on the mapAll of Iowa

City and county

City or townShare of ZIP residents
Afton52%
Arispe3.5%

CountyShare of ZIP residents
Union County100%

Town or county subdivisionShare of ZIP residents
Union township72%
Dodge township11%
Sand Creek township8.1%
Highland township3.7%
Grant township2.8%
Pleasant township1.5%
Jones township1.1%
Lincoln township0.3%
New Hope township<0.1%

Congressional district

Congressional districtShare of ZIP residents
Iowa's 3rd congressional district (IA-03)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 986%
State Senate District 1214%

State house districtShare of ZIP residents
State House District 1786%
State House District 2314%

Voting precincts

5 voting precincts overlap ZIP 50830. 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 50830 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.