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Madison CDP, MD

ZIP 21677 — People & Community

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

Upper Middle ClassLow Snow Area

Demographics, education attainment, health access, and community lifestyle

Population & Demographics in 21677

21677 has a population of 534 with a median age of 55.0 yrs (47.9% male).

Race & Ethnicity
White
98.7%+60% vs US avg
x
Black
0.4%-97% vs US avg
x
Asian
0.0%
x
Hispanic
0.8%-96% vs US avg
x
Age Groups
0–17
19.3%-12% vs US avg
x
18–64
48.3%-22% vs US avg
x
65+
32.4%+99% vs US avg
x
Education
Less than HS
0.5%-96% vs US avg
x
High school
29.9%+14% vs US avg
x
Some college
46.4%+60% vs US avg
x
Bachelor's+
23.2%-31% vs US avg
x
Marital Status
Married
75.0%+56% vs US avg
x
Never married
19.6%-42% vs US avg
x
Divorced
0.8%-92% vs US avg
x
Widowed / Separated
4.6%
x
Diversity Index
3/100

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

Social & household profile

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

Poverty Rate
33.4%+190% vs US avg
x
Foreign Born
0.0%
x
Veterans
16.5%+175% vs US avg
x
Disability
11.9%-11% vs US avg
x
Single Parent
0.0%
x
Recent Births
0.0%
x
Top ancestry
IrishEnglishGerman

Health & Community Indicators in 21677

Poverty Rate
33.4%+190% vs US avg
x
Veterans
16.5%+175% vs US avg
x
Foreign Born
0.0%
x
Single Parent
0.0%
x
Disability
11.9%-11% vs US avg
x
Uninsured
1.9%-76% vs US avg
x
SNAP Benefits
13.3%+13% 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
Population534
Median age55.0
Poverty rate33.4%
Demographics statistics
Demographics
White98.7%
Hispanic0.8%
Black0.4%
Asian0.0%
Foreign-born0.0%