Zip code 21010

Zip code 21010, MD

The zip code 21010, type standard, belongs to the following denominations: Gunpowder, Aber Prov Grd, Aberdeen Proving Ground, Edgewood Arsenal . It is part of the county Harford County, state of Maryland. It has an estimated population of 580.

The postal code 21010 has several names. If you are going to use the postal service be sure to use only those denominations marked as official (Gunpowder) or acceptable (Aber Prov Grd, Aberdeen Proving Ground).