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Cape St. Claire CDP, MD

ZIP 21409 — People & Community

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

Upper Middle ClassLow Snow AreaRemote Work Hub

Demographics, education attainment, health access, and community lifestyle

Population & Demographics in 21409

21409 has a population of 20,175 with a median age of 42.8 yrs (49.6% male).

Race & Ethnicity
White
82.3%+34% vs US avg
x
Black
4.5%-64% vs US avg
x
Asian
2.8%-53% vs US avg
x
Hispanic
7.2%-62% vs US avg
x
Other / Two+
3.3%
x
Age Groups
0–17
24.2%+10% vs US avg
x
18–64
57.2%-7% vs US avg
x
65+
18.6%+14% vs US avg
x
Education
Less than HS
2.4%-78% vs US avg
x
High school
15.7%-40% vs US avg
x
Some college
24.5%-15% vs US avg
x
Bachelor's+
57.4%+70% vs US avg
x
Marital Status
Married
61.0%+27% vs US avg
x
Never married
23.8%-30% vs US avg
x
Divorced
10.5%+2% vs US avg
x
Widowed / Separated
4.7%
x
Diversity Index
31/100

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

Social & household profile

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

Poverty Rate
2.5%-79% vs US avg
x
Foreign Born
20.2%+45% vs US avg
x
Veterans
13.5%+125% vs US avg
x
Disability
9.8%-27% vs US avg
x
Single Parent
6.3%-22% vs US avg
x
Recent Births
40.9%+605% vs US avg
x
Top ancestry
GermanEnglishIrish

Health & Community Indicators in 21409

Poverty Rate
2.5%-79% vs US avg
x
Veterans
13.5%+125% vs US avg
x
Foreign Born
20.2%+45% vs US avg
x
Single Parent
6.3%-22% vs US avg
x
Disability
9.8%-27% vs US avg
x
Uninsured
2.4%-70% vs US avg
x
SNAP Benefits
4.2%-64% vs US avg
x
Private School
0.8%-92% vs US avg
x
Recent Births
40.9%+605% vs US avg
x
Smartphone Only
0.0%
x

People & Community key statistics

Population statistics
Population
Population20,175
Median age42.8
Poverty rate2.5%
Demographics statistics
Demographics
White82.3%
Hispanic7.2%
Black4.5%
Asian2.8%
Foreign-born20.2%