Monroe County Illinois is covered by a total of 11 ZIP Codes. There are 6 ZIP Codes in Monroe County that extend into adjacent counties (Randolph County, and Saint Clair County). Of the ZIP codes within or partially within Monroe County there are 7 Standard ZIP Codes and 3 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 Monroe 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 | |||
|---|---|---|---|---|---|
| Columbia | Standard | |||
| East Carondelet | Standard | |||
| Fults | Standard | |||
| Hecker | PO Box | |||
| Maeystown | PO Box | |||
| New Athens | Standard | |||
| Prairie Du Rocher | Standard | |||
| Red Bud | Standard | |||
| Renault | PO Box | |||
| Valmeyer | Standard | |||
| Waterloo | Standard |