Cromwell ZIP code, Iowa
The ZIP code for Cromwell, IA is 50842, and its area code is 641.
- USPS city name
- 1 ZIP code
- Overlapping the city
- 1 more
- Population
- 103
- Area code
- 641
- County
- Union County
- State
- Iowa
NANPA lists no telephone rate centre for Cromwell itself, so these are the area codes of the nearest one, Creston (4.1 miles). A town on an area-code boundary can differ from its neighbour.
Mail addressed to Cromwell uses the ZIP code above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.
ZIP codes addressed as Cromwell
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
50842 | Cromwell , IA | Standard | 99 | $59,583 | $104,700 |
Other ZIP codes overlapping Cromwell
These ZIP codes cover part of Cromwell but are addressed as somewhere else.
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
50801 | Creston , IA | Standard | 9,034 | $58,015 | $124,900 |
Map of Cromwell ZIP codes
The ZIP codes of Cromwell, IA, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Towns near Cromwell
The nearest larger towns are Creston (7,435 people, 5.2 mi), Prescott (213 people, 8.0 mi) and Orient (448 people, 11 mi).
| Town | Population | Distance |
|---|---|---|
| Creston | 7,435 | 5.2 mi |
More nearby: every ZIP code in Union County · Iowa ZIP codes
Cite this page
zipcodes.pro. “Cromwell, IA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ia/cromwell
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