21774 Post Office

Find 21774 post offices and USPS mailing boxes. Post offices provide information on bulk mail services, domestic mail delivery, international shipping, change of address, mail forwarding, PO boxes, and passport services.


New Market Post Office 168 West Main Street New Market MD 21774 301-865-3333


Monrovia Post Office 4411 Green Valley Road Monrovia MD 21770 3.8 miles from 21774 301-865-5432

Libertytown Post Office 11941 Main Street Frederick MD 21701 5.1 miles from 21774 301-898-7156

Walkersville Post Office 7 East Frederick Street Walkersville MD 21793 6.6 miles from 21774 301-845-8342

Mount Airy Post Office 505 Windy Knoll Drive Mount Airy MD 21771 7.0 miles from 21774 301-829-1199

Frederick Post Office 201 East Patrick Street Frederick MD 21701 7.4 miles from 21774 301-662-2131

College Estates Post Office 1301 West 7th Street Frederick MD 21702 8.2 miles from 21774 301-662-6115

Woodsboro Post Office 602 South Main Street Woodsboro MD 21798 8.6 miles from 21774 301-845-8408

Damascus Post Office 26400 Woodfield Road Damascus MD 20872 9.0 miles from 21774 301-253-3781

Buckeystown Post Office 4001 Buckeystown Pike Frederick MD 21704 9.7 miles from 21774 301-874-5294

New Midway Post Office 12048 Woodsboro Pike Keymar MD 21757 10.8 miles from 21774 301-845-2145

Ladiesburg Post Office 12509 Woodsboro Pike Keymar MD 21757 11.5 miles from 21774 301-845-2956

Woodbine Post Office 7623 Woodbine Road Woodbine MD 21797 11.7 miles from 21774 410-795-9596

Lisbon Post Office 1280 Hopkins Alley Lisbon MD 21765 11.8 miles from 21774 410-489-7177

Union Bridge Post Office 111 Penrose Street Union Bridge MD 21791 11.8 miles from 21774 410-775-2510

Braddock Heights Post Office 4707 Schley Avenue Braddock Heights MD 21714 12.5 miles from 21774 301-371-5998

New Windsor Post Office 204 Maple Avenue New Windsor MD 21776 12.5 miles from 21774 410-635-2151

Clarksburg Post Office 22505 Gateway Center Drive Clarksburg MD 20871 12.7 miles from 21774 301-540-0856

Adamstown Post Office 5537 Mountville Road Adamstown MD 21710 13.0 miles from 21774 301-874-5429

Middletown Post Office 7227 Hollow Road Middletown MD 21769 13.4 miles from 21774 301-371-6880

What Change of Address options are available?

Customers can request a temporary or permanent Change of Address either online or in person at the Post Office using PS Form 3575. The online application for Change of Address has a $1.00 identity validation fee.

Is it possible to insure mail and items sent via the USPS?

Yes. Standard mail can be insured for up to $5,000 for an additional fee. Registered mail items can be insured for up to $50,000.

What is the USPS Office of Inspector General?

The Office of Inspector General (OIG) is a division within the USPS responsible for ensuring the integrity and accountability of the postal service. It conducts investigations to safeguard the postal system and performs audits and reviews.