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Gaithersburg city, MD

ZIP 20878 — People & Community

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

Upper Middle ClassLarge CommunityLow Snow AreaRemote Work Hub

Demographics, education attainment, health access, and community lifestyle

Population & Demographics in 20878

20878 has a population of 65,236 with a median age of 41.4 yrs (47.2% male).

Race & Ethnicity
White
47.6%-23% vs US avg
x
Black
10.5%-15% vs US avg
x
Asian
26.5%+349% vs US avg
x
Hispanic
13.8%-26% vs US avg
x
Other / Two+
1.6%
x
Age Groups
0–17
21.8%-1% vs US avg
x
18–64
63.2%+2% vs US avg
x
65+
15.0%-8% vs US avg
x
Education
Less than HS
3.8%-65% vs US avg
x
High school
10.3%-61% vs US avg
x
Some college
15.8%-45% vs US avg
x
Bachelor's+
70.1%+108% vs US avg
x
Marital Status
Married
59.6%+24% vs US avg
x
Never married
30.0%-11% vs US avg
x
Divorced
7.3%-29% vs US avg
x
Widowed / Separated
3.1%
x
Diversity Index
67/100

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

Social & household profile

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

Poverty Rate
5.0%-57% vs US avg
x
Foreign Born
32.0%+130% vs US avg
x
Veterans
2.9%-51% vs US avg
x
Disability
7.0%-48% vs US avg
x
Single Parent
6.4%-21% vs US avg
x
Recent Births
24.9%+329% vs US avg
x
Top ancestry
GermanIrishEnglish

Health & Community Indicators in 20878

Poverty Rate
5.0%-57% vs US avg
x
Veterans
2.9%-51% vs US avg
x
Foreign Born
32.0%+130% vs US avg
x
Single Parent
6.4%-21% vs US avg
x
Disability
7.0%-48% vs US avg
x
Uninsured
6.0%-25% vs US avg
x
SNAP Benefits
4.7%-59% vs US avg
x
Private School
0.4%-96% vs US avg
x
Recent Births
24.9%+329% vs US avg
x
Smartphone Only
0.0%
x

People & Community key statistics

Population statistics
Population
Population65,236
Median age41.4
Poverty rate5.0%
Demographics statistics
Demographics
White47.6%
Hispanic13.8%
Black10.5%
Asian26.5%
Foreign-born32.0%