Conowingo zipcode
| City | Conowingo |
| ZIP Code | 21918 |
| Type | Standard |
| State Code | MD |
| State | Maryland |
ZIP code of Conowingo is 21918. This place is located in Maryland state in US. To send any postal service to Conowingo, you must use 21918 zipcode.
| City | Conowingo |
| ZIP Code | 21918 |
| Type | Standard |
| State Code | MD |
| State | Maryland |
ZIP code of Conowingo is 21918. This place is located in Maryland state in US. To send any postal service to Conowingo, you must use 21918 zipcode.
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