Aberdeen, MD · standard
ZIP Code 21001
Harford County, Maryland - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 21,487
- 278/sq mi High-density area
- $83,238
- Median income Near-median income area
- $285,800
- Median home value Near-median home value
- 28.2%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
Aberdeen pairs an above-median household income with above-median home values, in a low-density, homeowner-dominated area.
- Top 34%
- household income, US ZIPs
- Top 36%
- home value, US ZIPs
- 278
- people per sq mi
- 63%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 21001 against every reporting US ZIP.
FHFA HPI release change
What changed in the latest House Price Index year
- FHFA House Price Index values in ZIP 21001 (Aberdeen, MD) rose +3.6% from 2023 to 2024. The all-transactions index moved from 241.6 in 2023 to 250.3 in 2024 (2000 = 100).
ZIP code 21001 is a densely settled ZIP (a standard USPS delivery area) in Aberdeen, Harford County, Maryland, with 21,487 residents across 77.4 square miles, a density of 278 people per square mile, in the New York time zone.
ZIP 21001 lands in the middle-income range, with a median household income of $83,238 (27% below the average Maryland ZIP), while per-capita income is $41,898. The poverty rate is 12.7%, with unemployment at 5.7%; those measures add context to the income figure. Home values sit below the statewide ZIP benchmark: the median is $285,800 (36% below the average Maryland ZIP), and median rent is $1,442; owner occupancy is 63.3%.
Educational attainment sits below the national norm: 28.2% of adults hold a bachelor's degree or higher, the median age is 37.7, and the average commute is 29 minutes. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Harford County, so 21001 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 →
Top industries in ZIP 21001
Top 5 sectors by establishment count in Aberdeen, MD
Which industries have the most business establishments in ZIP 21001.
- Retail trade
Retail trade
84 establishments
- Health care and social assistance
Health care and social assistance
71 establishments
- Accommodation and food services
Accommodation and food services
71 establishments
- Other services (except public administration)
Other services (except public administration)
59 establishments
- Professional, scientific, and technical services
Professional, scientific, and technical services
52 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
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 21001, Aberdeen, 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
21,487
Population
77.4
Area (sq mi)
278
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 21001?
37.7
Median Age
49.1%
Male
50.9%
Female
8.9%
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?
$83,238
Median Household Income
-27% vs state ZIP avg
$41,898
Per Capita Income
12.7%
Poverty Rate
5.7%
Unemployment Rate
29.1 min
Mean Commute Time
How ZIP 21001 ranks among Maryland ZIPs
Aberdeen, 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)
$83,238 27th percentile higher than 27% 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
11,610housing units
11,610
Total Housing Units
11,204
Occupied Units
406
Vacant Units
2.42
Avg Household Size
Occupancy Type
$285,800
Median Home Value
-36% vs state ZIP avg
$1,442
Median Rent
1982
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How have home values changed over time?
FHFA House Price Index, annual appreciation data based on repeat sales and appraisals
+3.6%
YoY Change (2024)
250
HPI Index (2000 = 100)
+150%
Total Change Since 2000
Home values in ZIP 21001 have increased 3.6% over the past year (2024). Since 2000, this ZIP has seen +150% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +5.4% | 173 |
| 2021 | +10.7% | 192 |
| 2022 | +13.1% | 217 |
| 2023 | +11.3% | 242 |
| 2024 | +3.6% | 250 |
Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.
What businesses operate in this ZIP?
Census Bureau data shows 551 business establishments in ZIP 21001, employing approximately 11,492 people with a combined annual payroll of $637,426,000.
551
Businesses
11,492
Employees
$637.4M
Annual Payroll
16
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Retail trade | 84 | 15.3% |
| Health care and social assistance | 71 | 12.9% |
| Accommodation and food services | 71 | 12.9% |
| Other services (except public administration) | 59 | 10.7% |
| Professional, scientific, and technical services | 52 | 9.4% |
| Construction | 43 | 7.8% |
| Transportation and warehousing | 38 | 6.9% |
| Administrative and support and waste management and remediation services | 25 | 4.5% |
| Wholesale trade | 23 | 4.2% |
| Real estate and rental and leasing | 22 | 4.0% |
| Finance and insurance | 21 | 3.8% |
| Manufacturing | 16 | 2.9% |
| Information | 12 | 2.2% |
| Arts, entertainment, and recreation | 6 | 1.1% |
| Educational services | 5 | 0.9% |
| Management of companies and enterprises | 3 | 0.5% |
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 21001 vs 21130 →
ZIP 21001 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 21009
Abingdon (21009)
29,766 residents
- 21015
Bel Air (21015)
27,763 residents
- 21040
Edgewood (21040)
24,420 residents
- 21001
Aberdeen (21001)
21,487 residents
- 21078
Havre De Grace (21078)
17,603 residents
- 21017 7,062
Belcamp (21017)
7,062 residents
- 21028 3,460
Churchville (21028)
3,460 residents
- 21034 3,387
Darlington (21034)
3,387 residents
- 21005 2,112
Aberdeen Proving Ground (21005)
2,112 residents
What this shows Among its immediate neighbors, ZIP 21001 ranks #4 by population - useful context the national average alone can't give.
ZIP 21001 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 21028
Churchville (21028)
$137,586 median income
- 21015
Bel Air (21015)
$137,281 median income
- 21005
Aberdeen Proving Ground (21005)
$125,208 median income
- 21009
Abingdon (21009)
$121,660 median income
- 21017
Belcamp (21017)
$106,831 median income
- 21078
Havre De Grace (21078)
$106,667 median income
- 21001
Aberdeen (21001)
$83,238 median income
- 21040
Edgewood (21040)
$81,704 median income
- 21034
Darlington (21034)
$78,047 median income
What this shows By household income, ZIP 21001 ranks #7 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 21130 | Perryman, MD | 187 | 2.3 mi |
| 21017 | Belcamp, MD | 7,062 | 3.1 mi |
| 21028 | Churchville, MD | 3,460 | 4.5 mi |
| 21078 | Havre De Grace, MD | 17,603 | 4.9 mi |
| 21005 | Aberdeen Proving Ground, MD | 2,112 | 5.0 mi |
| 21015 | Bel Air, MD | 27,763 | 5.7 mi |
| 21009 | Abingdon, MD | 29,766 | 5.7 mi |
| 21034 | Darlington, MD | 3,387 | 9.7 mi |
| 21040 | Edgewood, MD | 24,420 | 7.4 mi |
| 21902 | Perry Point, MD | 471 | 7.9 mi |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 21001, both outside MD so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (21,487 here; floor ≥1,000).
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 21001 in?
ZIP code 21001 (Aberdeen) 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 21001?
ZIP code 21001 in Aberdeen, MD has a population of 21,487 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 21001?
The median household income in ZIP 21001 is $83,238, which is 9% above the national average of $76,288.
What is the average home value in ZIP 21001?
The median home value in ZIP 21001 is $285,800, which is 3% above the national average of $278,155.
What is the demographic makeup of ZIP 21001?
The largest racial group in ZIP 21001 is White at 52.3%. Hispanic or Latino residents make up 9.1% of the population.
How many businesses are in ZIP code 21001?
ZIP code 21001 has 551 business establishments employing approximately 11,492 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 21001?
The top industries by establishment count in ZIP 21001 are: Retail trade (84), Health care and social assistance (71), Accommodation and food services (71). There are 16 industry sectors represented in total.
How have home values changed in ZIP code 21001?
According to the FHFA House Price Index, home values in ZIP 21001 increased by 3.6% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 150%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 21001?
In ZIP code 21001, 59.6% of residents aged 25+ have a high school diploma or higher, and 28.2% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 21001?
The mean commute time for workers in ZIP code 21001 is 29.1 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 21001?
In ZIP code 21001, approximately 63.3% of occupied housing units are owner-occupied and 36.7% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 21001?
The poverty rate in ZIP code 21001 is 12.7% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
Take this with you
What to do with ZIP 21001's numbers, next.
- See how ZIP 21001 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Aberdeen, 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.