21904 Post Office

Find 21904 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.


Port Deposit Post Office 11 South Main Street Port Deposit MD 21904 410-378-4191


Perryville Post Office 620 Broad Street Perryville MD 21903 3.8 miles from 21904 410-642-6012

Colora Post Office 2167 Liberty Grove Road Colora MD 21917 4.2 miles from 21904 410-658-5743

Perry Point Post Office 0 Avenue D Bldg 64 Perry Point MD 21902 4.2 miles from 21904 410-642-2924

Havre De Grace Post Office 301 North Juniata Street Havre de Grace MD 21078 4.8 miles from 21904 410-939-9507

Charlestown Post Office 241 Market Street Charlestown MD 21914 5.7 miles from 21904 410-287-2560

Rising Sun Post Office 105 North Walnut Street Rising Sun MD 21911 5.9 miles from 21904 410-658-6848

Conowingo Post Office 305 Conowingo Road Conowingo MD 21918 6.6 miles from 21904 410-378-2828

North East Post Office 406 South Main Street North East MD 21901 6.8 miles from 21904 410-287-6644

Darlington Post Office 1113 Main Street Darlington MD 21034 7.4 miles from 21904 410-457-0461

Aberdeen Post Office 30 West Bel Air Avenue Aberdeen MD 21001 9.0 miles from 21904 410-272-1610

Nottingham Post Office 127 Baltimore Pike Nottingham PA 19362 9.8 miles from 21904 610-998-9254

Aberdeen Proving Ground Post Office 4510 Boothby Hill Avenue Aberdeen Proving Ground MD 21005 10.1 miles from 21904 410-272-2706

Churchville Post Office 2931 Churchville Road Churchville MD 21028 10.3 miles from 21904 410-734-9119

Childs Post Office 1470 Blue Ball Road Elkton MD 21921 10.5 miles from 21904 410-398-5648

Perryman Post Office 428 Michaelsville Road Perryman MD 21130 12.5 miles from 21904 410-272-5712

Elkton Post Office 137 West Main Street Elkton MD 21921 12.5 miles from 21904 410-398-4040

Oxford Post Office 215 East Locust Street Oxford PA 19363 12.6 miles from 21904 610-998-9013

Lewisville Post Office 950 Chesterville Road Lincoln University PA 19352 12.6 miles from 21904 610-255-4424

Elk Mills Post Office 732 Elk Mills Road Elk Mills MD 21920 13.2 miles from 21904 410-398-4474

About Post Offices

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.