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ZIP Code Database - Facts & Stats

Data Last Updated: October 1, 2022

ZIP Codes for City of Belmont, MA

Belmont, MA Covers 1 ZIP Code

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 02478StandardMiddlesex24,664617 / 857

Timezone(s):Eastern (GMT -05:00)
Population:24,729 (More Details)
Male Population:11,620
Female Population:13,109
Median Age:42
ZIP Codes:1
Area Codes:2
Total Area:847 square miles (county)
Land Area:818 square miles (county)
Water Area:29 square miles (county)

Belmont, MA Demographic Information *

Total population24,729
Male population11,620
Female population13,109
Median age (years)41.5
White Population20,639
Black Population455
Indian Population28
Asian Population2,735
Hawaiian Population3
Hispanic Population754
Median age (Male)40.4
Median age (Female)42.5
Total households9,651
Family households (families)6,620
Average household size2.54
Average family size3.07
Total housing units10,184
* Demographic data is based on 2010 Census. Products


  1. U.S. Postal Service [Last Updated: 10/1/2022],
  2. Internal Data Creation [Last Updated: 10/1/2022],
  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],