There are 4 United States Postal Service post boxes available to the public in zip code 21856. For additional collection boxes in neighboring communities, see the list of post boxes in Maryland.

Are you looking for a post office? See the list of post offices in the 21856 zip code.

Mailbox in Post Office Lobby
6300 Cherry Walk Rd
Directions
Public Collection Box
6300 Cherry Walk Rd
Directions
Public Collection Box
3519 Allen Rd
Directions
Public Collection Box
102 N Main St
Directions

Mailboxes in Nearby Zip Codes