Belmont, MA 02478 ZIP Code Profile

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Belmont, MA

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ZIP Code 02478: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Belmont, MA 02478

  • ZIP Code Type: STANDARD
  • County: Middlesex County
  • Centroid: Latitude 42.394, Longitude -71.18
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 899
  • PO Box Addresses: 190
  • Residential Addresses: 10,111
    • Multi-Family Addresses: 786
    • Single Family Addresses: 9,325

The ZIP Code maps and database are updated 4 times per year.
Database updated: February 1, 2018, Maps updated: February 1, 2018.

EXTREMELY LOCAL Demographic Data

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02478 ZIP Code Map

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Belmont, MA 02478 Data & Demographics (As of July 1, 2017)


Total Population 26,112
Daytime Population: Workers 8,285
Daytime Population: Residents 12,673
Total Daytime Population (TDP) 20,958
Ratio TDP/Total Population1 0.80
Population in Households 25,914
Population in Familes 21,352
Population in Group Qrtrs 198
Population Density2 5,557
Diversity Index3 41


Median Household Income $116,643
Average Household Income $168,347
Per Capita Income $64,983


Total Housing Units 10,628 (100%)
Owner Occupied HU 6,132 (57.7%)
Renter Occupied HU 3,923 (36.9%)
Vacant Housing Units 573 ( 5.4%)
Median Home Value $711,992
Average Home Value $760,229


Total Households 10,055
Average Household Size 2.58
Family Households 6,856
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.79% 0.82%
Households 0.6% 0.76%
Families 0.52% 0.71%
Median Household Income   1.68%
Per Capita Income   2.01%

Belmont, MA 02478 - Peer Comparisons by Rank and Percentile

The table below compares 02478 to the other 521 ZIP Codes in Massachusetts by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 88 83rd
Population Density # 82 84th
Diversity Index # 147 72nd
Median Household Income # 51 90th
Per Capita Income # 48 91st

Additional comparisons and rankings can be made with a VERY EASY TO USE Massachusetts Census Data Comparison Tool.

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