ZIP code 50842: Cromwell, IA
ZIP code 50842 is in Cromwell, in Union County, Iowa. It is in Iowa's 3rd congressional district. Its state senate district is State Senate District 9; its state house district is State House District 17.
105residents (2020 Census)
0.3 sq miland area
1cities and towns
1congressional district
1voting precincts
City and county
| City or town | Share of ZIP residents |
|---|---|
| Cromwell | 100% |
| County | Share of ZIP residents |
|---|---|
| Union County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Douglas township | 100% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Iowa's 3rd congressional district (IA-03) | 100% |
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 9 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 17 | 100% |
Voting precincts
1 voting precinct overlap ZIP 50842. 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:50842")
ZIP 50842 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.