PlainZIP

Gunpowder, MD · standard

ZIP Code 21010

Harford County, Maryland - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

104
8/sq mi
$99,410
Median income
69.3%
Bachelor's or higher

The verdict

Gunpowder pairs an upper-quartile household income, in a rural, renter-heavy area.

Top 19%
household income, US ZIPs
8
people per sq mi
0%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 21010 against every reporting US ZIP.

ZIP code 21010 is a sparsely populated ZIP (a standard USPS delivery area) in Gunpowder, Harford County, Maryland, home to just 104 residents across 13.3 square miles, a density of 8 people per square mile, in the New York time zone.

ZIP 21010 lands in the middle-income range, with a median household income of $99,410 (13% below the Maryland average), while per-capita income is $28,745. The poverty rate stands at 0.0% and the unemployment rate at 0.0%. Median home value sits at -, median rent at $3,147 a month, and owner-occupancy at 0.0%.

This is a highly-educated ZIP: 69.3% of adults hold a bachelor's degree or higher, the median age is 19.3, and the average commute is -. Beyond these figures, 10 nearby ZIP codes within about 10 miles are surfaced below, along with 6 more sharing Harford County, letting you compare 21010 to its immediate surroundings rather than a national baseline alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 21010, Gunpowder, MD · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

104

Population

13.3

Area (sq mi)

8

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 21010?

19.3

Median Age

63.2%

Male

36.8%

Female

8.8%

Foreign-Born

White 91.2%
African American 0.0%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 0.0%
Hispanic or Latino 20.5%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$99,410

Median Household Income

-13% vs state

$28,745

Per Capita Income

0.0%

Poverty Rate

0.0%

Unemployment Rate

How ZIP 21010 ranks nationally

Gunpowder, MD household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$99,410 Top 19% higher than 81% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). This entry sits in this band. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 76.1%
Bachelor's Degree or Higher 69.3%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

117

Total Housing Units

55

Occupied Units

62

Vacant Units

4.35

Avg Household Size

Occupancy Type

Owner 0.0%
Renter 100.0%

$3,147

Median Rent

1938

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What businesses operate in this ZIP?

Census Bureau data shows 18 business establishments in ZIP 21010, employing approximately 1,165 people with a combined annual payroll of $57,054,000.

18

Businesses

1,165

Employees

$57.1M

Annual Payroll

2

Industry Sectors

Industry Establishments % of Total
Professional, scientific, and technical services 10 55.6%
Health care and social assistance 5 27.8%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 21010 vs 21040 →

ZIP 21010 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 21010 ranks #0 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 21010 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 21010 ranks #7 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
21040 Edgewood, MD 24,420 3.0 mi
21009 Abingdon, MD 29,766 5.6 mi
21162 White Marsh, MD 3,655 6.0 mi
21085 Joppa, MD 16,171 5.3 mi
21017 Belcamp, MD 7,062 6.6 mi
21220 Middle River, MD 39,199 6.5 mi
21156 Upper Falls, MD 358 6.5 mi
21087 Kingsville, MD 5,451 7.8 mi
21130 Perryman, MD 187 8.0 mi
21014 Bel Air, MD 36,047 10.7 mi

More ZIP Codes in Harford County

21014 standard
Bel Air, MD
Pop: 36,047
21009 standard
Abingdon, MD
Pop: 29,766
21015 standard
Bel Air, MD
Pop: 27,763
21040 standard
Edgewood, MD
Pop: 24,420
21001 standard
Aberdeen, MD
Pop: 21,487
21050 standard
Forest Hill, MD
Pop: 18,202

Related Areas

Harford County Gunpowder, MD Maryland

Frequently Asked Questions

What county is ZIP code 21010 in? ▼
ZIP code 21010 (Gunpowder) is located in Harford County, Maryland. Harford County contains multiple ZIP codes, see the full list at /counties/harford-md.
What is the population of ZIP code 21010? ▼
ZIP code 21010 in Gunpowder, MD has a population of 104 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 21010? ▼
The median household income in ZIP 21010 is $99,410, which is 30% above the national average of $76,288.
What is the demographic makeup of ZIP 21010? ▼
The largest racial group in ZIP 21010 is White at 91.2%. Hispanic or Latino residents make up 20.5% of the population.
How many businesses are in ZIP code 21010? ▼
ZIP code 21010 has 18 business establishments employing approximately 1,165 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 21010? ▼
In ZIP code 21010, 76.1% of residents aged 25+ have a high school diploma or higher, and 69.3% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).

Read our methodology to see how this data is sourced, computed, and verified.