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Mercersville CDP, MD

ZIP 21782 — People & Community

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

Middle ClassLow Snow Area

Demographics, education attainment, health access, and community lifestyle

Population & Demographics in 21782

21782 has a population of 4,056 with a median age of 48.1 yrs (53.7% male).

Race & Ethnicity
White
97.3%+58% vs US avg
x
Black
0.0%
x
Asian
0.4%-93% vs US avg
x
Hispanic
0.5%-97% vs US avg
x
Other / Two+
1.8%
x
Age Groups
0–17
16.9%-23% vs US avg
x
18–64
62.0%+1% vs US avg
x
65+
21.1%+29% vs US avg
x
Education
Less than HS
7.4%-33% vs US avg
x
High school
38.4%+47% vs US avg
x
Some college
29.0%+0% vs US avg
x
Bachelor's+
25.1%-25% vs US avg
x
Marital Status
Married
52.1%+8% vs US avg
x
Never married
28.3%-16% vs US avg
x
Divorced
10.9%+6% vs US avg
x
Widowed / Separated
8.6%
x
Diversity Index
5/100

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
3.8%-73% vs US avg
x
Veterans
10.7%+78% vs US avg
x
Disability
14.3%+6% vs US avg
x
Single Parent
2.8%-65% vs US avg
x
Recent Births
53.8%+828% vs US avg
x
Top ancestry
GermanEnglishIrish

Health & Community Indicators in 21782

Poverty Rate
2.7%-76% vs US avg
x
Veterans
10.7%+78% vs US avg
x
Foreign Born
3.8%-73% vs US avg
x
Single Parent
2.8%-65% vs US avg
x
Disability
14.3%+6% vs US avg
x
Uninsured
5.2%-35% vs US avg
x
SNAP Benefits
7.9%-32% vs US avg
x
Private School
0.0%
x
Recent Births
53.8%+828% vs US avg
x
Smartphone Only
0.0%
x

People & Community key statistics

Population statistics
Population
Population4,056
Median age48.1
Poverty rate2.7%
Demographics statistics
Demographics
White97.3%
Hispanic0.5%
Black0.0%
Asian0.4%
Foreign-born3.8%