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Westwood Colony CDP, SD

ZIP 57430 — 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 57430

57430 has a population of 1,916 with a median age of 47.4 yrs (53.0% male).

Race & Ethnicity
White
92.5%+50% vs US avg
x
Black
0.2%-98% vs US avg
x
Asian
0.0%
x
Hispanic
2.8%-85% vs US avg
x
Other / Two+
4.5%
x
Age Groups
0–17
18.1%-18% vs US avg
x
18–64
56.7%-8% vs US avg
x
65+
25.2%+55% vs US avg
x
Education
Less than HS
9.7%-13% vs US avg
x
High school
34.4%+31% vs US avg
x
Some college
36.5%+26% vs US avg
x
Bachelor's+
19.5%-42% vs US avg
x
Marital Status
Married
54.0%+12% vs US avg
x
Never married
21.7%-36% vs US avg
x
Divorced
8.6%-17% vs US avg
x
Widowed / Separated
15.8%
x
Diversity Index
14/100

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

Social & household profile

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

Poverty Rate
9.7%-16% vs US avg
x
Foreign Born
84.6%+509% vs US avg
x
Veterans
8.2%+36% vs US avg
x
Disability
12.1%-10% vs US avg
x
Single Parent
8.7%+8% vs US avg
x
Recent Births
36.7%+532% vs US avg
x
Top ancestry
GermanNorwegianIrish

Health & Community Indicators in 57430

Poverty Rate
9.7%-16% vs US avg
x
Veterans
8.2%+36% vs US avg
x
Foreign Born
84.6%+509% vs US avg
x
Single Parent
8.7%+8% vs US avg
x
Disability
12.1%-10% vs US avg
x
Uninsured
2.5%-68% vs US avg
x
SNAP Benefits
0.5%-96% vs US avg
x
Private School
0.0%
x
Recent Births
36.7%+532% vs US avg
x
Smartphone Only
0.0%
x

People & Community key statistics

Population statistics
Population
Population1,916
Median age47.4
Poverty rate9.7%
Demographics statistics
Demographics
White92.5%
Hispanic2.8%
Black0.2%
Asian0.0%
Foreign-born84.6%