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St. Onge CDP, SD

ZIP 57779 — 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 57779

57779 has a population of 300 with a median age of 53.7 yrs (39.3% male).

Race & Ethnicity
White
87.3%+42% vs US avg
x
Black
0.0%
x
Asian
0.0%
x
Hispanic
0.0%
x
Other / Two+
12.7%
x
Age Groups
0–17
0.0%
x
18–64
94.7%+53% vs US avg
x
65+
5.3%-67% vs US avg
x
Education
Less than HS
0.0%
x
High school
13.6%-48% vs US avg
x
Some college
16.5%-43% vs US avg
x
Bachelor's+
70.0%+108% vs US avg
x
Marital Status
Married
75.7%+57% vs US avg
x
Never married
24.3%-28% vs US avg
x
Divorced
0.0%
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
0.0%
x
Veterans
0.0%
x
Disability
0.0%
x
Single Parent
0.0%
x
Recent Births
0.0%
x
Top ancestry
IrishFrenchEnglish

Health & Community Indicators in 57779

Poverty Rate
0.0%
x
Veterans
0.0%
x
Single Parent
0.0%
x
Disability
0.0%
x
Uninsured
0.0%
x
SNAP Benefits
0.0%
x
Private School
0.0%
x
Recent Births
0.0%
x
Smartphone Only
0.0%
x

People & Community key statistics

Population statistics
Population
Population300
Median age53.7
Poverty rate0.0%
Demographics statistics
Demographics
White87.3%
Hispanic0.0%
Black0.0%
Asian0.0%