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ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2022

ZIP Codes for City of Frederick, MD

Frederick, MD Covers 6 ZIP Codes

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 21701StandardFrederick35,293240 / 301
ZIP Code 21702StandardFrederick38,847240 / 301
ZIP Code 21703StandardFrederick32,854240 / 301
ZIP Code 21704StandardFrederick13,321240 / 301
ZIP Code 21705P.O. BoxFrederick8240 / 301
ZIP Code 21709UniqueFrederick0240 / 301

Timezone(s):Eastern (GMT -05:00)
Population:65,239 (More Details)
Male Population:31,475
Female Population:33,764
Median Age:35
ZIP Codes:6
Area Codes:2
Total Area:667 square miles (county)
Land Area:660 square miles (county)
Water Area:7 square miles (county)

Frederick, MD Demographic Information *

Total population65,239
Male population31,475
Female population33,764
Median age (years)34.6
White Population41,681
Black Population12,144
Indian Population314
Asian Population3,800
Hawaiian Population54
Hispanic Population9,402
Median age (Male)33.4
Median age (Female)35.8
Total households25,352
Family households (families)15,349
Average household size2.5
Average family size3.15
Total housing units27,559
* Demographic data is based on 2010 Census. Products


  1. U.S. Postal Service [Last Updated: 5/1/2022],
  2. Internal Data Creation [Last Updated: 5/1/2022],
  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],