ZIP Code 21918 Area Code
Conowingo, Maryland
Area Code
301, 410, 443
Primary area codes for Maryland (per-ZIP data not available)
Location
| ZIP Code | 21918 |
|---|---|
| City | Conowingo |
| State | Maryland (MD) |
| County | Cecil |
Frequently Asked Questions
ZIP code 21918 is in Conowingo, Maryland. The primary area codes for Maryland are 301, 410, 443.
ZIP code 21918 is in Conowingo, Maryland.