21770 Zip code is used for Monrovia Area Code City in Frederick County, Maryland in Usa. The ZIP Codes / Postal Codes are Used by USPS (United States Postal Service known as “Post Office”, “ Usa Mail”, or” Postal Service”, an independent agency of the United States federal government responsible for providing postal service in the United States). Below is the detail for 21770, Monrovia Area Code City.
| Zip Code | : | 21770 |
| City Name | : | Monrovia Area Code |
| County Name | : | Frederick County |
| State Name | : | Maryland |
| Country Name | : | USA |
| Area Code | : | 301 |
| Time Zone | : | EST |
| Country Code | : | +1 |
| Currency | : | $ USA Dollor |
| ISO Code | : | USA |