Mahaska County Iowa is covered by a total of 16 ZIP Codes. There are 9 ZIP Codes in Mahaska County that extend into adjacent counties (Jasper County, Keokuk County, Marion County, Monroe County, Poweshiek County, and Wapello County). Of the ZIP codes within or partially within Mahaska County there are 15 Standard ZIP Codes and 1 PO Box ZIP Codes.
Click on the ZIP Codes in the interactive map to view more information. The map control in the upper right corner can be used to toggle map layers on and off. The red outline is the border of Mahaska County and can be turned on and off. Each type of postal code can also be turned on and off.
| ZIP Code | ZIP Code City/Town | ZIP Code Type | |||
|---|---|---|---|---|---|
| Barnes City | Standard | |||
| Bussey | Standard | |||
| Gibson | Standard | |||
| Leighton | Standard | |||
| Lynnville | Standard | |||
| New Sharon | Standard | |||
| Pella | Standard | |||
| Tracy | Standard | |||
| What Cheer | Standard | |||
| Beacon | Standard | |||
| Cedar | Standard | |||
| Eddyville | Standard | |||
| Fremont | Standard | |||
| Oskaloosa | Standard | |||
| Rose Hill | Standard | |||
| University Park | PO Box |