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 Low-density area
- $99,410
- Median income Above-median income area
- 69.3%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
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 average Maryland ZIP), while per-capita income is $28,745. Both reported hardship measures are comparatively low in absolute terms: poverty is 0.0% and unemployment is 0.0%. The ACS does not report a median home value for this ZIP, so housing cost context is limited to the available tenure and rent fields.
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 -. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Harford County, so 21010 can be compared with both its immediate and county-level context.
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
Who lives in ZIP 21010?
19.3
Median Age
63.2%
Male
36.8%
Female
8.8%
Foreign-Born
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 ZIP avg
$28,745
Per Capita Income
0.0%
Poverty Rate
0.0%
Unemployment Rate
How ZIP 21010 ranks among Maryland ZIPs
Gunpowder, MD household income vs. every Maryland ZIP code
Median household income among 419 reporting Maryland ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$99,410 45th percentile higher than 45% of 419 Maryland ZIPs
Each bar is a $20K-wide band; taller bars hold more Maryland 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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
117housing units
117
Total Housing Units
55
Occupied Units
62
Vacant Units
4.35
Avg Household Size
Occupancy Type
$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.
- 21220
Middle River (21220)
39,199 residents
- 21014
Bel Air (21014)
36,047 residents
- 21009
Abingdon (21009)
29,766 residents
- 21040
Edgewood (21040)
24,420 residents
- 21085
Joppa (21085)
16,171 residents
- 21017 7,062
Belcamp (21017)
7,062 residents
- 21087 5,451
Kingsville (21087)
5,451 residents
- 21162 3,655
White Marsh (21162)
3,655 residents
- 21156 358
Upper Falls (21156)
358 residents
What this shows Among its immediate neighbors, ZIP 21010 ranks #0 by population - useful context the national average alone can't give.
ZIP 21010 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 21162
White Marsh (21162)
$157,813 median income
- 21087
Kingsville (21087)
$129,188 median income
- 21009
Abingdon (21009)
$121,660 median income
- 21014
Bel Air (21014)
$116,970 median income
- 21085
Joppa (21085)
$113,714 median income
- 21017
Belcamp (21017)
$106,831 median income
- 21010
Gunpowder (21010)
$99,410 median income
- 21220
Middle River (21220)
$81,817 median income
- 21040
Edgewood (21040)
$81,704 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.
| 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 |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 21010, both outside MD so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Harford County
Related Areas
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).
Related
Take this with you
What to do with ZIP 21010's numbers, next.
- See how ZIP 21010 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Gunpowder, MD ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.