Richland County Ohio is covered by a total of 20 ZIP Codes. There are 14 ZIP Codes in Richland County that extend into adjacent counties (Ashland County, Crawford County, Huron County, Knox County, Marion County, and Morrow County). Of the ZIP codes within or partially within Richland County there are 18 Standard ZIP Codes and 2 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 Richland 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 | |||
|---|---|---|---|---|---|
| Fredericktown | Standard | |||
| Ashland | Standard | |||
| Bellville | Standard | |||
| Butler | Standard | |||
| Crestline | Standard | |||
| Galion | Standard | |||
| Greenwich | Standard | |||
| Lucas | Standard | |||
| Ontario | PO Box | |||
| Perrysville | Standard | |||
| Plymouth | Standard | |||
| Shelby | Standard | |||
| Shiloh | Standard | |||
| Mansfield | PO Box | |||
| Mansfield | Standard | |||
| Mansfield | Standard | |||
| Mansfield | Standard | |||
| Mansfield | Standard | |||
| Mansfield | Standard | |||
| Mansfield | Standard |