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Castine CDP, ME

ZIP 04421 — 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 04421

04421 has a population of 1,222 with a median age of 21.0 yrs (63.1% male).

Race & Ethnicity
White
88.0%+43% vs US avg
x
Black
1.9%-85% vs US avg
x
Asian
0.2%-97% vs US avg
x
Hispanic
5.1%-73% vs US avg
x
Other / Two+
4.8%
x
Age Groups
0–17
10.9%-51% vs US avg
x
18–64
69.5%+13% vs US avg
x
65+
19.6%+20% vs US avg
x
Education
Less than HS
0.4%-97% vs US avg
x
High school
4.2%-84% vs US avg
x
Some college
19.8%-32% vs US avg
x
Bachelor's+
75.6%+124% vs US avg
x
Marital Status
Married
35.9%-25% vs US avg
x
Never married
55.6%+65% vs US avg
x
Divorced
6.2%-39% vs US avg
x
Widowed / Separated
2.2%
x
Diversity Index
22/100

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

Social & household profile

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

Poverty Rate
9.3%-19% vs US avg
x
Foreign Born
19.5%+41% vs US avg
x
Veterans
6.6%+10% vs US avg
x
Disability
10.6%-21% vs US avg
x
Single Parent
9.8%+21% vs US avg
x
Recent Births
48.4%+734% vs US avg
x
Top ancestry
EnglishScottishIrish

Health & Community Indicators in 04421

Poverty Rate
9.3%-19% vs US avg
x
Veterans
6.6%+10% vs US avg
x
Foreign Born
19.5%+41% vs US avg
x
Single Parent
9.8%+21% vs US avg
x
Disability
10.6%-21% vs US avg
x
Uninsured
3.4%-58% vs US avg
x
SNAP Benefits
4.6%-60% vs US avg
x
Private School
0.0%
x
Recent Births
48.4%+734% vs US avg
x
Smartphone Only
0.0%
x

People & Community key statistics

Population statistics
Population
Population1,222
Median age21.0
Poverty rate9.3%
Demographics statistics
Demographics
White88.0%
Hispanic5.1%
Black1.9%
Asian0.2%
Foreign-born19.5%