There are 4 United States Postal Service post boxes available to the public in zip code 21120. 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 21120 zip code.

Mailboxes in Nearby Zip Codes

Public Collection Box
645 Happy Ln
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Public Collection Box
212 Mount Carmel Rd
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Public Collection Box
1415 Wiseburg Rd
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Public Collection Box
21600 New Freedom Rd
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