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Spearfish city, SD

ZIP 57783 — 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 57783

57783 has a population of 16,929 with a median age of 40.0 yrs (50.1% male).

Race & Ethnicity
White
89.9%+46% vs US avg
x
Black
0.2%-98% vs US avg
x
Asian
0.6%-89% vs US avg
x
Hispanic
3.4%-82% vs US avg
x
Other / Two+
5.8%
x
Age Groups
0–17
19.0%-14% vs US avg
x
18–64
58.7%-5% vs US avg
x
65+
22.3%+37% vs US avg
x
Education
Less than HS
4.3%-61% vs US avg
x
High school
21.5%-18% vs US avg
x
Some college
34.2%+18% vs US avg
x
Bachelor's+
40.0%+19% vs US avg
x
Marital Status
Married
47.7%-1% vs US avg
x
Never married
33.6%-1% vs US avg
x
Divorced
12.2%+19% vs US avg
x
Widowed / Separated
6.5%
x
Diversity Index
19/100

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

Social & household profile

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

Poverty Rate
13.8%+20% vs US avg
x
Foreign Born
22.6%+63% vs US avg
x
Veterans
10.1%+69% vs US avg
x
Disability
16.5%+23% vs US avg
x
Single Parent
7.3%-10% vs US avg
x
Recent Births
26.2%+352% vs US avg
x
Top ancestry
GermanNorwegianIrish

Health & Community Indicators in 57783

Poverty Rate
13.8%+20% vs US avg
x
Veterans
10.1%+69% vs US avg
x
Foreign Born
22.6%+63% vs US avg
x
Single Parent
7.3%-10% vs US avg
x
Disability
16.5%+23% vs US avg
x
Uninsured
11.2%+40% vs US avg
x
SNAP Benefits
9.8%-17% vs US avg
x
Private School
0.1%-99% vs US avg
x
Recent Births
26.2%+352% vs US avg
x
Smartphone Only
0.0%
x

People & Community key statistics

Population statistics
Population
Population16,929
Median age40.0
Poverty rate13.8%
Demographics statistics
Demographics
White89.9%
Hispanic3.4%
Black0.2%
Asian0.6%
Foreign-born22.6%