Allen, MD 21810 ZIP Code Profile

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Allen, MD

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ZIP Code 21810: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Allen, MD 21810

  • ZIP Code Type: PO BOX
  • County: Wicomico County
  • Centroid: Latitude 38.286, Longitude -75.69
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 14
  • PO Box Addresses: 56
  • Residential Addresses: 1
    • Multi-Family Addresses: 0
    • Single Family Addresses: 1

The ZIP Code maps and database are updated 4 times per year.
Database updated: February 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.


21810 ZIP Code Map

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Allen, MD 21810 Data & Demographics (As of July 1, 2017)


Total Population 35
Daytime Population: Workers 1
Daytime Population: Residents 12
Total Daytime Population (TDP) 13
Ratio TDP/Total Population1 0.37
Population in Households 35
Population in Familes 30
Population in Group Qrtrs 0
Population Density2 8,140
Diversity Index3 37


Median Household Income $56,105
Average Household Income $74,561
Per Capita Income $29,824


Total Housing Units 15 (100%)
Owner Occupied HU 12 (80.0%)
Renter Occupied HU 2 (13.3%)
Vacant Housing Units 1 ( 6.7%)
Median Home Value $250,000
Average Home Value $331,250


Total Households 14
Average Household Size 2.5
Family Households 11
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 0.81% 0.57%
Households 0.0% 1.39%
Families 0.0% 0.0%
Median Household Income   2.29%
Per Capita Income   2.91%

Allen, MD 21810 - Peer Comparisons by Rank and Percentile

The table below compares 21810 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 # 447 2nd
Population Density # 18 96th
Diversity Index # 240 47th
Median Household Income # 357 22nd
Per Capita Income # 313 32nd

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

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