About ZIP Code 21010
ZIP code 21010 is assigned to Gunpowder, Harford County, Maryland, United States. It falls in the Eastern Time (ET) zone. The estimated population of this ZIP code area is 239 with a density of 12.7 people per square mile.
Location Details
ZIP Code21010
CityGunpowder
CountyHarford County
StateMaryland
CountryUnited States
TimezoneEastern Time (ET)
Timezone IDAmerica/New_York
Latitude39.3895
Longitude-76.2985
ZIP TypeStandard ZIP
Post Office
Address4510 BOOTHBY HILL AVE
CityABERDEEN PROVING GROUND
StateMD
Nearby ZIP Codes in Maryland
Frequently Asked Questions
What city is ZIP code 21010 in?
ZIP code 21010 is in Gunpowder, Harford County, Maryland, United States.
What county is ZIP code 21010 in?
ZIP code 21010 is in Harford County, Maryland.
What timezone is ZIP code 21010 in?
ZIP code 21010 is in the Eastern Time (ET) zone (America/New_York).
What is the population of ZIP code 21010?
The estimated population of ZIP code 21010 is 239 people with a density of 12.7 people per square mile.
What state is ZIP code 21010 in?
ZIP code 21010 is in Maryland (MD), United States.
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Data Source: United States Postal Service (USPS) & US Census Bureau (ZCTA data) · Public domain government data. For official ZIP code information visit tools.usps.com. Data is periodically updated but may not reflect the most recent changes.