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Riva CDP, MD

ZIP 21140 — 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 21140

21140 has a population of 4,231 with a median age of 44.2 yrs (53.6% male).

Race & Ethnicity
White
90.8%+47% vs US avg
x
Black
0.3%-98% vs US avg
x
Asian
0.8%-86% vs US avg
x
Hispanic
8.3%-55% vs US avg
x
Age Groups
0–17
26.0%+18% vs US avg
x
18–64
48.9%-21% vs US avg
x
65+
25.1%+54% vs US avg
x
Education
Less than HS
1.4%-87% vs US avg
x
High school
15.5%-41% vs US avg
x
Some college
31.3%+8% vs US avg
x
Bachelor's+
51.7%+53% vs US avg
x
Marital Status
Married
67.4%+40% vs US avg
x
Never married
17.3%-49% vs US avg
x
Divorced
11.8%+14% vs US avg
x
Widowed / Separated
3.5%
x
Diversity Index
17/100

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

Social & household profile

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

Poverty Rate
0.8%-93% vs US avg
x
Foreign Born
11.4%-18% vs US avg
x
Veterans
9.5%+58% vs US avg
x
Disability
8.1%-39% vs US avg
x
Single Parent
4.4%-45% vs US avg
x
Recent Births
11.3%+95% vs US avg
x
Top ancestry
GermanIrishEnglish

Health & Community Indicators in 21140

Poverty Rate
0.8%-93% vs US avg
x
Veterans
9.5%+58% vs US avg
x
Foreign Born
11.4%-18% vs US avg
x
Single Parent
4.4%-45% vs US avg
x
Disability
8.1%-39% vs US avg
x
Uninsured
1.8%-77% vs US avg
x
SNAP Benefits
6.3%-46% vs US avg
x
Private School
0.8%-92% vs US avg
x
Recent Births
11.3%+95% vs US avg
x
Smartphone Only
0.0%
x

People & Community key statistics

Population statistics
Population
Population4,231
Median age44.2
Poverty rate0.8%
Demographics statistics
Demographics
White90.8%
Hispanic8.3%
Black0.3%
Asian0.8%
Foreign-born11.4%