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Belmont, MA Profile: Facts & Data

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The Belmont CDP⁽¹⁾ had a population of 27,175 as of 2020-2024 American Community Survey 5-Year Estimates. Belmont ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Massachusetts. See peer rankings below.

The primary coordinate point for Belmont is located at latitude 42.3959 and longitude -71.1787 in Middlesex County. The formal boundaries for the Belmont Census Designated Place encompass a land area of 4.65 sq. miles and a water area of 0.07 sq. miles. Middlesex County is in the Eastern time zone (GMT -5).

The Belmont Census Designated Place has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

The Belmont Census Designated Place is located within Town of Belmont, a minor civil division (MCD) of Middlesex County.

A Census Designated Place (CDP) is a statistical counterpart to a self-governing (incorporated) place such as a city, town, or village. A CDP is not a legal entity and has no governmental functions.

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Belmont Demographic Data
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Belmont, MA Data & Demographics

Source: 2020-2024 American Community Survey 5-Year Estimates

POPULATION
Total Population	27,175 (100%)
Population Density	5,848 per sq mi
Diversity Index¹	48


INCOME
Median Household Income	$183,137
Per Capita Income	$95,484
Median Home Value	$1,159,000

HOUSING
Total HU (Housing Units)	10,881 (100%)
Owner Occupied HU	6,739 (61.9%)
Renter Occupied HU	3,673 (33.8%)
Vacant Housing Units	469 (4.3%)

HOUSEHOLDS
Total Households	10,412
Average Household Size	2.59
Family Households	7,691 (73.9%)

NOTES

The Diversity Index estimates the likelihood that two persons chosen at random from the same area belong to different race or ethnic groups, based on five groups: Hispanic/Latino, Non-Hispanic White, Non-Hispanic Black, Non-Hispanic Asian, and Non-Hispanic Other/Multiracial. A value of 0 indicates the population belongs entirely to one group. Higher values indicate a more evenly mixed population. Calculated from U.S. Census Bureau ACS 5-year estimates (table B03002).

Belmont, MA - Peer Comparisons by Rank and Percentile

The table below compares Belmont to the other 248 incorporated cities, towns and CDPs in Massachusetts by rank and percentile using 2020-2024 American Community Survey 5-Year Estimates 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	# 61	76th
Population Density	# 18	93rd
Median Household Income	# 24	91st
Per Capita Income	# 22	91st
Diversity Index	# 44	83rd

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

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Belmont, MA Profile: Facts & Data

Belmont, Massachusetts - Basic Facts

Belmont, MA Data & Demographics

POPULATION

INCOME

HOUSING

HOUSEHOLDS

Belmont, MA - Peer Comparisons by Rank and Percentile

Belmont, MA - Most Popular Things to Do

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