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ZIP Code Database - Facts & Stats

Data Last Updated: November 1, 2022

ZIP Codes for City of Arnold, MD

Arnold, MD Covers 1 ZIP Code

ZIP CodeTypeCountyPopulation
ZIP Code 21012StandardAnne Arundel21,317

Timezone(s):Eastern (GMT -05:00)
Population:23,106 (More Details)
Male Population:11,222
Female Population:11,884
Median Age:41
ZIP Codes:1
Area Codes:2
Total Area:588 square miles (county)
Land Area:415 square miles (county)
Water Area:173 square miles (county)

Arnold, MD Demographic Information *

Total population23,106
Male population11,222
Female population11,884
Median age (years)40.9
White Population20,484
Black Population1,208
Indian Population54
Asian Population558
Hawaiian Population6
Hispanic Population918
Median age (Male)39.9
Median age (Female)41.9
Total households8,419
Family households (families)6,343
Average household size2.73
Average family size3.12
Total housing units8,766
* 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],