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Union Bridge town, MD

ZIP 21791 — People & Community

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

Middle ClassLow Snow Area

Demographics, education attainment, health access, and community lifestyle

Population & Demographics in 21791

21791 has a population of 4,734 with a median age of 40.9 yrs (52.0% male).

Race & Ethnicity
White
93.9%+52% vs US avg
x
Black
1.8%-85% vs US avg
x
Asian
2.4%-59% vs US avg
x
Hispanic
1.1%-94% vs US avg
x
Other / Two+
0.7%
x
Age Groups
0–17
21.8%-1% vs US avg
x
18–64
58.8%-5% vs US avg
x
65+
19.4%+19% vs US avg
x
Education
Less than HS
5.6%-50% vs US avg
x
High school
43.2%+65% vs US avg
x
Some college
24.9%-14% vs US avg
x
Bachelor's+
26.3%-22% vs US avg
x
Marital Status
Married
55.8%+16% vs US avg
x
Never married
30.0%-11% vs US avg
x
Divorced
11.0%+7% vs US avg
x
Widowed / Separated
3.2%
x
Diversity Index
12/100

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

Social & household profile

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

Poverty Rate
6.5%-43% vs US avg
x
Foreign Born
5.4%-61% vs US avg
x
Veterans
13.4%+124% vs US avg
x
Disability
13.8%+3% vs US avg
x
Single Parent
6.7%-18% vs US avg
x
Recent Births
60.9%+951% vs US avg
x
Top ancestry
GermanAmericanIrish

Health & Community Indicators in 21791

Poverty Rate
6.5%-43% vs US avg
x
Veterans
13.4%+124% vs US avg
x
Foreign Born
5.4%-61% vs US avg
x
Single Parent
6.7%-18% vs US avg
x
Disability
13.8%+3% vs US avg
x
Uninsured
7.1%-12% vs US avg
x
SNAP Benefits
6.7%-43% vs US avg
x
Private School
0.0%
x
Recent Births
60.9%+951% vs US avg
x
Smartphone Only
0.0%
x

People & Community key statistics

Population statistics
Population
Population4,734
Median age40.9
Poverty rate6.5%
Demographics statistics
Demographics
White93.9%
Hispanic1.1%
Black1.8%
Asian2.4%
Foreign-born5.4%