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ZIP Code Database - Facts & Stats

Data Last Updated: November 1, 2022

ZIP Codes for City of Allen, MD

Allen, MD Covers 1 ZIP Code

ZIP CodeTypeCountyPopulation
ZIP Code 21810P.O. BoxWicomico487

Timezone(s):Eastern (GMT -05:00)
Population:210 (More Details)
Male Population:93
Female Population:117
Median Age:40
ZIP Codes:1
Area Codes:1
Total Area:400 square miles (county)
Land Area:374 square miles (county)
Water Area:26 square miles (county)

Allen, MD Demographic Information *

Total population210
Male population93
Female population117
Median age (years)39.8
White Population196
Black Population10
Indian Population2
Asian Population0
Hawaiian Population0
Hispanic Population6
Median age (Male)39.3
Median age (Female)40.2
Total households74
Family households (families)61
Average household size2.84
Average family size3.08
Total housing units82
* Demographic data is based on 2010 Census. Products


  1. U.S. Postal Service [Last Updated: 11/1/2022],
  2. Internal Data Creation [Last Updated: 11/1/2022],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],