ZIP Code 21639 – Greensboro, Maryland
The 21639 ZIP Code belongs to Greensboro, Maryland. The population in this 21639 ZIP code is 4,621. The latitude is 38.96533 and longitude is -75.7928 in 21639 Greensboro, Maryland. The time zone for this 21639 ZIP code is America/New_York.
| City | Greensboro |
| Zip Code | 21639 |
| State | Maryland |
| County | Caroline |
| Population | 4,621 |
| Latitude | 38.96533 |
| Longitude | -75.7928 |
| Time Zone | America/New_York |