ZIP code 21010: Gunpowder, MD
21010 is a ZIP code in Gunpowder, Maryland, mainly in Harford County, part of the Baltimore-Columbia-Towson, MD metro area. About 239 people live here.
- Population
- 239
- Median household income
- $99,410
- Typical home value
- —
- Median rent
- $3,147gross, per month
- Median age
- 19.3
- Homeowners
- 0%of occupied homes
Shaded: ZIP code 21010's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 21010 details
| City | Gunpowder |
|---|---|
| State | Maryland |
| County | Harford County |
| Metro area | Baltimore-Columbia-Towson, MD |
| Time zone | Eastern Time (UTC−5), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 7.3 sq mi, plus 0.1 sq mi of water |
| Population density | 33 people per sq mi |
| Bachelor's degree or higher | 69.3% of adults 25+ |
| Center coordinates | 39.39093, -76.29263 |
ZIP codes near 21010
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 21040 | Edgewood, MD | 2.7 mi | 24,960 |
| 21027 | Chase, MD | 4.6 mi | — |
| 21085 | Joppa, MD | 5.1 mi | 17,307 |
| 21009 | Abingdon, MD | 5.6 mi | 33,679 |
| 21162 | White Marsh, MD | 6.0 mi | 4,639 |
| 21220 | Middle River, MD | 6.2 mi | 42,824 |
| 21156 | Upper Falls, MD | 6.5 mi | 204 |
| 21017 | Belcamp, MD | 6.6 mi | 6,648 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
About ZIP code 21010
What city is ZIP code 21010?
ZIP code 21010 is in Gunpowder, MD, in Harford County.
What county is ZIP code 21010 in?
21010 is mainly in Harford County, Maryland.
What is the population of ZIP code 21010?
About 239 people live in ZIP code 21010, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 21010 in?
21010 is in Eastern Time (UTC−5). It observes daylight saving time.