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Arnold CDP, MD

ZIP 21012 — 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 21012

21012 has a population of 22,306 with a median age of 38.6 yrs (49.6% male).

Race & Ethnicity
White
82.4%+34% vs US avg
x
Black
4.1%-67% vs US avg
x
Asian
3.6%-40% vs US avg
x
Hispanic
10.5%-44% vs US avg
x
Age Groups
0–17
25.6%+16% vs US avg
x
18–64
59.1%-4% vs US avg
x
65+
15.3%-6% vs US avg
x
Education
Less than HS
2.1%-81% vs US avg
x
High school
10.1%-61% vs US avg
x
Some college
28.0%-3% vs US avg
x
Bachelor's+
59.8%+77% vs US avg
x
Marital Status
Married
61.4%+28% vs US avg
x
Never married
27.1%-20% vs US avg
x
Divorced
8.4%-19% vs US avg
x
Widowed / Separated
3.2%
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
3.1%-73% vs US avg
x
Foreign Born
22.0%+58% vs US avg
x
Veterans
11.7%+95% vs US avg
x
Disability
10.0%-26% vs US avg
x
Single Parent
9.3%+15% vs US avg
x
Recent Births
22.2%+283% vs US avg
x
Top ancestry
GermanIrishEnglish

Health & Community Indicators in 21012

Poverty Rate
3.1%-73% vs US avg
x
Veterans
11.7%+95% vs US avg
x
Foreign Born
22.0%+58% vs US avg
x
Single Parent
9.3%+15% vs US avg
x
Disability
10.0%-26% vs US avg
x
Uninsured
2.0%-74% vs US avg
x
SNAP Benefits
3.7%-68% vs US avg
x
Private School
0.5%-95% vs US avg
x
Recent Births
22.2%+283% vs US avg
x
Smartphone Only
0.0%
x

People & Community key statistics

Population statistics
Population
Population22,306
Median age38.6
Poverty rate3.1%
Demographics statistics
Demographics
White82.4%
Hispanic10.5%
Black4.1%
Asian3.6%
Foreign-born22.0%