PlainZIP

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
$83,238
Median income
$285,800
Median home value
28.2%
Bachelor's or higher

The verdict

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.

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 Maryland average), while per-capita income is $41,898. Local economic indicators show a 12.7% poverty rate alongside 5.7% unemployment. Housing costs here run $285,800 for a typical home value (36% below the state average), with rent averaging $1,442 a month; 63.3% of homes are owner-occupied.

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. A geography-based comparison follows: 10 ZIP codes within about 10 miles of 21001, plus 6 more within Harford County, give a clearer read than the national average 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 →

Top industries in ZIP 21001

Top 5 sectors by establishment count in Aberdeen, MD

Which industries have the most business establishments in ZIP 21001.

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 · ZIP Code Business Patterns (ZBP) As of 2023

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

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 21001?

37.7

Median Age

49.1%

Male

50.9%

Female

8.9%

Foreign-Born

White 52.3%
African American 31.2%
Asian 3.3%
American Indian or Alaska Native 0.4%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 9.5%
Hispanic or Latino 9.1%

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

$41,898

Per Capita Income

12.7%

Poverty Rate

5.7%

Unemployment Rate

29.1 min

Mean Commute Time

How ZIP 21001 ranks nationally

Aberdeen, MD household income vs. every US ZIP code

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

$83,238 Top 34% higher than 66% 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 59.6%
Bachelor's Degree or Higher 28.2%

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

What does housing look like?

11,610

Total Housing Units

11,204

Occupied Units

406

Vacant Units

2.42

Avg Household Size

Occupancy Type

Owner 63.3%
Renter 36.7%

$285,800

Median Home Value

-36% vs state

$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.

residents

What this shows Among its immediate neighbors, ZIP 21001 ranks #4 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 21001 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 21001 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
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

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
21050 standard
Forest Hill, MD
Pop: 18,202
21078 standard
Havre De Grace, MD
Pop: 17,603

Related Areas

Harford County Aberdeen, MD Maryland

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.

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