Alexander County Illinois is covered by a total of 9 ZIP Codes. There are 3 ZIP Codes in Alexander County that extend into adjacent counties (Cape Girardeau County, Pulaski County, and Union County). Of the ZIP codes within or partially within Alexander County there are 8 Standard ZIP Codes and 1 PO Box ZIP Codes. Data Updated October 2, 2024
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 Alexander 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 | |||
|---|---|---|---|---|---|
| Cairo | Standard | |||
| Jonesboro | Standard | |||
| McClure | Standard | |||
| Miller City | Standard | |||
| Olive Branch | Standard | |||
| Tamms | Standard | |||
| Thebes | Standard | |||
| Ullin | Standard | |||
| Unity | PO Box |