There are 10 United States Postal Service post boxes available to the public in zip code 21704. 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 21704 zip code.

Mailboxes in Nearby Zip Codes

Public Collection Box
7330 Executive Way
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Public Collection Box
5301 Buckeystown Pike
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Public Collection Box
7309 Grove Rd
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Public Collection Box
7400 Guilford Dr
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Public Collection Box
5300 Spectrum Dr
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Giant
5316 New Design Rd
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Staples
5557 Urbana Pike
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Public Collection Box
5500 Buckeystown Pike
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Office Depot
5600 Urbana Pike Ste B
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Office Depot
5600 Urbana Pike Ste B
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