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Madison CDP, MD

ZIP 21648 — People & Community

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

Low Snow Area

Demographics, education attainment, health access, and community lifestyle

Population & Demographics in 21648

21648 has a population of 104 with a median age of 61.7 yrs (58.6% male).

Race & Ethnicity
White
84.6%+37% vs US avg
x
Black
2.9%-77% vs US avg
x
Asian
11.5%+96% vs US avg
x
Hispanic
2.9%-85% vs US avg
x
Age Groups
0–17
7.7%-65% vs US avg
x
18–64
64.4%+4% vs US avg
x
65+
27.9%+71% vs US avg
x
Education
Less than HS
0.0%
x
High school
21.5%-18% vs US avg
x
Some college
63.3%+119% vs US avg
x
Bachelor's+
15.2%-55% vs US avg
x
Marital Status
Married
78.8%+64% vs US avg
x
Never married
21.2%-37% vs US avg
x
Divorced
0.0%
x
Diversity Index
27/100

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

Social & household profile

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

Poverty Rate
6.1%-47% vs US avg
x
Foreign Born
0.0%
x
Veterans
8.3%+39% vs US avg
x
Disability
0.0%
x
Single Parent
2.5%-69% vs US avg
x
Recent Births
0.0%
x
Top ancestry
IrishEnglishGerman

Health & Community Indicators in 21648

Poverty Rate
6.1%-47% vs US avg
x
Veterans
8.3%+39% vs US avg
x
Foreign Born
0.0%
x
Single Parent
2.5%-69% vs US avg
x
Disability
0.0%
x
Uninsured
0.0%
x
SNAP Benefits
2.5%-79% vs US avg
x
Private School
0.0%
x
Recent Births
0.0%
x
Smartphone Only
0.0%
x

People & Community key statistics

Population statistics
Population
Population104
Median age61.7
Poverty rate6.1%
Demographics statistics
Demographics
White84.6%
Hispanic2.9%
Black2.9%
Asian11.5%
Foreign-born0.0%