Zip Code 21001
Aberdeen, Maryland — Harford County
📍 ZIP code 21001 is in Aberdeen, Harford County, Maryland.
ZIP code 21001 is located in Aberdeen, Harford County, Maryland. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 26,121. The area code for ZIP code 21001 is 301.
Quick Answer
Zip code 21001 is in Aberdeen, Maryland (Harford County). It has a population of 26,121, median household income of $81,778, and median home value of $267,400.
Population
26,121
Income
$81,778
Home Value
$267,400
Climate
86°F / 25°F
About Zip Code 21001
Zip code 21001 is located in Aberdeen, Maryland, within Harford County. Home to approximately 26,121 residents, this area sits at an elevation of 73 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 301.
The median household income is $81,778 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $267,400, and the cost of living index is 95 (5% below the national average of 100).
Summers average a high of 86°F while winters drop to 25°F. The area receives about 47 in of rain and 8 in of snow annually. The zip code covers 29.9 square miles of land area and 1.6 square miles of water.
Key Statistics
26,121
$81,778
$267,400
Eastern (EST/EDT)
301
73 ft
29.9 sq mi
37.7
11,010
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Compare With Nearby Zip Codes
| Metric | 21001 | 21130 | 21017 | 21005 | 21078 | 21028 |
|---|---|---|---|---|---|---|
| City | Aberdeen, MD | Perryman, MD | Belcamp, MD | Aberdeen Proving Ground, MD | Havre De Grace, MD | Churchville, MD |
| Population | 26,121 | 75 | 6,404 | 2,354 | 20,002 | 2,872 |
| Median Income | $81,778 | $0 | $100,298 | $123,264 | $109,451 | $133,583 |
| Home Value | $267,400 | $0 | $241,700 | $0 | $355,500 | $476,400 |
| Cost of Living | 95 | 100 | 102 | 123 | 128 | 170 |
| Median Age | 37.7 | 21.7 | 37.1 | 32.2 | 47.4 | 44.4 |
Cost of Living
100 = National Average. Aberdeen's cost of living is 5% below the national average.
vs. State Avg
Below
Affordability
Affordable
Income-to-Home
3.3x
Demographics
Zip code 21001 has a population of 26,121 people with a median age of 37.7. There are 11,010 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Aberdeen (21001) population trend from 2010 to 2024
↑ 0.6%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
86°F
25°F
47 in
8 in
Aberdeen experiences warm summers with average highs around 86°F. Winters are cool with lows averaging 25°F. The area receives about 8 in of snow per year.
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Housing & Economy
Median Home Value
$267,400
Median Household Income
$81,778
With 11,010 housing units across 29.9 square miles, 21001 has a housing density of 368 units per square mile. The home price-to-income ratio is 3.3x.
Location & Geography
Latitude
39.5045°
Longitude
-76.2010°
Land Area
29.9 sq mi
Water Area
1.6 sq mi
Nearby Zip Codes
Zip codes closest to 21001 (Aberdeen, MD) with distances:
Related Cities in Maryland
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ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 21001's $81,778. A way to compare Aberdeen to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 21001 (Aberdeen, MD). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Aberdeen, Maryland?
Aberdeen, Maryland uses zip code 21001.
What county is zip code 21001 in?
Zip code 21001 is located in Harford County, Maryland.
What is the population of zip code 21001?
The population of zip code 21001 is 26,121 with a median age of 37.7.
Is 21001 in Aberdeen, Maryland?
Yes, zip code 21001 is in Aberdeen, Harford County, Maryland. The area code is 301.
Frequently Asked Questions
What city is zip code 21001 in?
Zip code 21001 is in Aberdeen, Maryland. It is part of Harford County and uses the Eastern (EST/EDT) timezone.
What is zip code 21001?
Zip code 21001 is a U.S. postal code in Aberdeen, Maryland (Harford County). It has a population of 26,121 and covers 29.9 square miles.
What is the population of zip code 21001?
The population of zip code 21001 (Aberdeen, MD) is 26,121 with a median age of 37.7. There are approximately 11,010 housing units in this area.
What is the median income in zip code 21001?
The median household income in zip code 21001 (Aberdeen, MD) is $81,778 per year. The cost of living index is 95 (100 = national average).
What is the average home price in zip code 21001?
The median home value in zip code 21001 (Aberdeen, MD) is $267,400. The cost of living index is 95 compared to the national average of 100.
What county is zip code 21001 in?
Zip code 21001 is located in Harford County, Maryland. The primary city is Aberdeen.
What is the area code for zip code 21001?
Zip code 21001 in Aberdeen, MD uses area code 301. It is located in the Eastern (EST/EDT) timezone.
Is zip code 21001 a good place to live?
Zip code 21001 (Aberdeen, MD) has a cost of living index of 95 (100 = national average), a median household income of $81,778, and median home values of $267,400. The median age is 37.7. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 21001?
The cost of living index for zip code 21001 (Aberdeen, MD) is 95, where 100 represents the national average. This area is below the national average. Median home value: $267,400.
What schools serve zip code 21001?
Zip code 21001 in Aberdeen, Maryland is served by the local school district of Harford County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.