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Belmont CDP, MA

ZIP 02478 — People & Community

Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.

Wealthy AreaLow Snow AreaRemote Work Hub

Demographics, education attainment, health access, and community lifestyle

Population & Demographics in 02478

02478 has a population of 26,966 with a median age of 42.4 yrs (47.7% male).

Race & Ethnicity
White
69.7%+13% vs US avg
x
Black
1.5%-88% vs US avg
x
Asian
20.4%+246% vs US avg
x
Hispanic
4.7%-75% vs US avg
x
Other / Two+
3.6%
x
Age Groups
0–17
24.4%+11% vs US avg
x
18–64
57.4%-7% vs US avg
x
65+
18.2%+12% vs US avg
x
Education
Less than HS
2.4%-78% vs US avg
x
High school
7.8%-70% vs US avg
x
Some college
9.7%-67% vs US avg
x
Bachelor's+
80.1%+138% vs US avg
x
Marital Status
Married
63.5%+32% vs US avg
x
Never married
26.1%-23% vs US avg
x
Divorced
5.7%-44% vs US avg
x
Widowed / Separated
4.7%
x
Diversity Index
47/100

Higher = more diverse (Simpson index from race/ethnicity)

Social & household profile

Poverty, nativity, veterans, disability, family structure, and births (ACS).

Poverty Rate
3.5%-70% vs US avg
x
Foreign Born
34.1%+146% vs US avg
x
Veterans
2.4%-61% vs US avg
x
Disability
7.9%-41% vs US avg
x
Single Parent
4.5%-44% vs US avg
x
Recent Births
43.0%+642% vs US avg
x
Top ancestry
IrishEnglishItalian

Health & Community Indicators in 02478

Poverty Rate
3.5%-70% vs US avg
x
Veterans
2.4%-61% vs US avg
x
Foreign Born
34.1%+146% vs US avg
x
Single Parent
4.5%-44% vs US avg
x
Disability
7.9%-41% vs US avg
x
Uninsured
1.8%-78% vs US avg
x
SNAP Benefits
4.2%-64% vs US avg
x
Private School
0.9%-91% vs US avg
x
Recent Births
43.0%+642% vs US avg
x
Smartphone Only
0.0%
x

People & Community key statistics

Population statistics
Population
Population26,966
Median age42.4
Poverty rate3.5%
Demographics statistics
Demographics
White69.7%
Hispanic4.7%
Black1.5%
Asian20.4%
Foreign-born34.1%