Obrien County Iowa is covered by a total of 13 ZIP Codes. There are 10 ZIP Codes in Obrien County that extend into adjacent counties (Buena Vista County, Cherokee County, Clay County, Lyon County, Osceola County, and Sioux County). Of the ZIP codes within or partially within Obrien County there are 12 Standard 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 Obrien 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 | |||
|---|---|---|---|---|---|
| Calumet | PO Box | |||
| Granville | Standard | |||
| Paullina | Standard | |||
| Peterson | Standard | |||
| Sutherland | Standard | |||
| Sheldon | Standard | |||
| Archer | Standard | |||
| Ashton | Standard | |||
| Hospers | Standard | |||
| Primghar | Standard | |||
| Sanborn | Standard | |||
| Hartley | Standard | |||
| Melvin | Standard |