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Ellicott City CDP, MD

ZIP 21042 — 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 21042

21042 has a population of 43,021 with a median age of 45.0 yrs (50.4% male).

Race & Ethnicity
White
57.8%-6% vs US avg
x
Black
4.2%-66% vs US avg
x
Asian
29.3%+397% vs US avg
x
Hispanic
4.3%-77% vs US avg
x
Other / Two+
4.4%
x
Age Groups
0–17
25.8%+17% vs US avg
x
18–64
55.2%-11% vs US avg
x
65+
19.0%+17% vs US avg
x
Education
Less than HS
2.5%-78% vs US avg
x
High school
8.8%-67% vs US avg
x
Some college
14.0%-51% vs US avg
x
Bachelor's+
74.7%+122% vs US avg
x
Marital Status
Married
69.7%+45% vs US avg
x
Never married
21.2%-37% vs US avg
x
Divorced
4.0%-61% vs US avg
x
Widowed / Separated
5.1%
x
Diversity Index
57/100

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

Social & household profile

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

Poverty Rate
2.7%-76% vs US avg
x
Foreign Born
20.0%+44% vs US avg
x
Veterans
7.0%+16% vs US avg
x
Disability
7.7%-43% vs US avg
x
Single Parent
3.1%-62% vs US avg
x
Recent Births
45.6%+686% vs US avg
x
Top ancestry
GermanIrishEnglish

Health & Community Indicators in 21042

Poverty Rate
2.7%-76% vs US avg
x
Veterans
7.0%+16% vs US avg
x
Foreign Born
20.0%+44% vs US avg
x
Single Parent
3.1%-62% vs US avg
x
Disability
7.7%-43% vs US avg
x
Uninsured
2.6%-67% vs US avg
x
SNAP Benefits
1.9%-84% vs US avg
x
Private School
0.6%-94% vs US avg
x
Recent Births
45.6%+686% vs US avg
x
Smartphone Only
0.0%
x

People & Community key statistics

Population statistics
Population
Population43,021
Median age45.0
Poverty rate2.7%
Demographics statistics
Demographics
White57.8%
Hispanic4.3%
Black4.2%
Asian29.3%
Foreign-born20.0%