Aberdeen, MD 21001 ZIP Code Profile

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Aberdeen, MD

ZIP Code 21001: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Aberdeen, MD 21001

  • ZIP Code Type: STANDARD
  • County: Harford County
  • Centroid: Latitude 39.509, Longitude -76.182
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 712
  • PO Box Addresses: 338
  • Residential Addresses: 10,131
    • Multi-Family Addresses: 1,578
    • Single Family Addresses: 8,553

The ZIP Code maps and database are updated 4 times per year.
Database updated: May 1, 2018, Maps updated: February 1, 2018.

EXTREMELY LOCAL Demographic Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting demographic data.


21001 ZIP Code Map

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Aberdeen, MD 21001 Data & Demographics (As of July 1, 2017)


Total Population 24,578
Daytime Population: Workers 14,500
Daytime Population: Residents 12,373
Total Daytime Population (TDP) 26,873
Ratio TDP/Total Population1 1.09
Population in Households 24,488
Population in Familes 19,759
Population in Group Qrtrs 90
Population Density2 446
Diversity Index3 60


Median Household Income $57,151
Average Household Income $73,905
Per Capita Income $28,529


Total Housing Units 10,151 (100%)
Owner Occupied HU 6,097 (60.1%)
Renter Occupied HU 3,349 (33.0%)
Vacant Housing Units 705 ( 6.9%)
Median Home Value $229,523
Average Home Value $252,505


Total Households 9,446
Average Household Size 2.59
Family Households 6,372
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 1.66% 1.12%
Households 1.54% 1.05%
Families 1.45% 0.98%
Median Household Income   1.64%
Per Capita Income   2.53%

Aberdeen, MD 21001 - Peer Comparisons by Rank and Percentile

The table below compares 21001 to the other 456 ZIP Codes in Maryland by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 108 77th
Population Density # 218 52nd
Diversity Index # 91 80th
Median Household Income # 347 24th
Per Capita Income # 335 27th

Additional comparisons and rankings can be made with a VERY EASY TO USE Maryland Census Data Comparison Tool.

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