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ZIP Code Database - Facts & Stats

Data Last Updated: October 1, 2021

ZIP Codes for City of Ellicott City, MD

Ellicott City, MD Covers 3 ZIP Codes

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 21041P.O. BoxHoward0410 / 443
ZIP Code 21042StandardHoward38,076410 / 443
ZIP Code 21043StandardHoward42,246410 / 443

Timezone(s):Eastern (GMT -05:00)
Counties:HOWARD, MD
Population:65,834 (More Details)
Male Population:32,066
Female Population:33,768
Median Age:41
ZIP Codes:3
Area Codes:2
Total Area:253 square miles (county)
Land Area:251 square miles (county)
Water Area:2 square miles (county)

Ellicott City, MD Demographic Information *

Total population65,834
Male population32,066
Female population33,768
Median age (years)40.7
White Population42,452
Black Population5,585
Indian Population134
Asian Population15,056
Hawaiian Population24
Hispanic Population2,323
Median age (Male)39.7
Median age (Female)41.5
Total households23,734
Family households (families)18,150
Average household size2.76
Average family size3.2
Total housing units24,672
* Demographic data is based on 2010 Census.

Ellicott City, MD Other Information

  • Located in HOWARD County, Maryland
  • Ellicott City, MD is also known as:
    • OELLA, MD

210 Cities within 30 miles of Ellicott City, MD Products


  1. U.S. Postal Service [Last Updated: 10/1/2021],
  2. Internal Data Creation [Last Updated: 10/1/2021],
  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],