Chickasaw County Iowa is covered by a total of 11 ZIP Codes. There are 10 ZIP Codes in Chickasaw County that extend into adjacent counties (Bremer County, Butler County, Fayette County, Floyd County, Howard County, and Winneshiek County). Of the ZIP codes within or partially within Chickasaw County there are 10 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 Chickasaw 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 | |||
|---|---|---|---|---|---|
| Alta Vista | Standard | |||
| Charles City | Standard | |||
| Fredericksburg | Standard | |||
| Ionia | Standard | |||
| Nashua | Standard | |||
| New Hampton | Standard | |||
| North Washington | PO Box | |||
| Sumner | Standard | |||
| Calmar | Standard | |||
| Lawler | Standard | |||
| Waucoma | Standard |