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ZIP Code Database - Facts & Stats

Data Last Updated: September 1, 2021

ZIP Codes for City of Dorchester, MA

Dorchester, MA Covers 4 ZIP Codes

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 02121StandardSuffolk25,978617 / 857 / 781
ZIP Code 02122StandardSuffolk23,479617 / 857 / 781
ZIP Code 02124StandardSuffolk47,783617
ZIP Code 02125StandardSuffolk33,295617 / 857 / 781

Timezone(s):Eastern (GMT -05:00)
Counties:SUFFOLK, MA
Population:25,978 (More Details)
Male Population:11,424
Female Population:14,554
Median Age:30
ZIP Codes:4
Area Codes:3
Total Area:120 square miles (county)
Land Area:58 square miles (county)
Water Area:62 square miles (county)

Dorchester, MA Demographic Information *

There is no Census data for the city of DORCHESTER, MA. We have pulled information for the ZIP Code 02121 instead.
Total population25,978
Male population11,424
Female population14,554
Median age (years)30.1
White Population1,971
Black Population18,324
Indian Population193
Asian Population207
Hawaiian Population10
Hispanic Population7,107
Median age (Male)26.7
Median age (Female)32.6
Total households9,661
Family households (families)6,396
Average household size2.68
Average family size3.3
Total housing units10,589
* Demographic data is based on 2010 Census.

Dorchester, MA Other Information

  • Located in SUFFOLK County, Massachusetts
  • Dorchester, MA is also known as:
    • BOSTON, MA

261 Cities within 30 miles of Dorchester, MA Products


  1. U.S. Postal Service [Last Updated: 9/1/2021],
  2. Internal Data Creation [Last Updated: 9/1/2021],
  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],