Boundary Atlas

ZIP code 50846: Fontanelle, IA

ZIP code 50846 is in Fontanelle (62% of residents), in Adair County, Iowa. 38% of its residents live outside city limits. It is in Iowa's 3rd congressional district. Its state senate district is State Senate District 12; its state house district is State House District 23.

1,084residents (2020 Census)
95.4 sq miland area
1cities and towns
1congressional district
2voting precincts

See it on the mapAll of Iowa

City and county

City or townShare of ZIP residents
Fontanelle62%

CountyShare of ZIP residents
Adair County100%

Town or county subdivisionShare of ZIP residents
Summerset township76%
Prussia township12%
Jackson township5.5%
Washington township3.3%
Eureka township1.8%
Richland township1.3%

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 12100%

State house districtShare of ZIP residents
State House District 23100%

Voting precincts

2 voting precincts overlap ZIP 50846. 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:50846")

ZIP 50846 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.