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Buffalo town, SD

ZIP 57720 — People & Community

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

Middle ClassLow Snow AreaRemote Work Hub

Demographics, education attainment, health access, and community lifestyle

Population & Demographics in 57720

57720 has a population of 561 with a median age of 53.0 yrs (58.8% male).

Race & Ethnicity
White
87.5%+42% vs US avg
x
Black
1.1%-91% vs US avg
x
Asian
0.0%
x
Hispanic
1.3%-93% vs US avg
x
Other / Two+
10.2%
x
Age Groups
0–17
19.6%-11% vs US avg
x
18–64
60.3%-2% vs US avg
x
65+
20.1%+24% vs US avg
x
Education
Less than HS
3.5%-68% vs US avg
x
High school
34.4%+31% vs US avg
x
Some college
33.2%+15% vs US avg
x
Bachelor's+
29.0%-14% vs US avg
x
Marital Status
Married
66.2%+38% vs US avg
x
Never married
20.6%-39% vs US avg
x
Divorced
7.5%-27% vs US avg
x
Widowed / Separated
5.6%
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
8.4%-27% vs US avg
x
Foreign Born
60.0%+332% vs US avg
x
Veterans
7.5%+26% vs US avg
x
Disability
9.4%-29% vs US avg
x
Single Parent
1.3%-84% vs US avg
x
Recent Births
31.8%+447% vs US avg
x
Top ancestry
GermanNorwegianIrish

Health & Community Indicators in 57720

Poverty Rate
8.4%-27% vs US avg
x
Veterans
7.5%+26% vs US avg
x
Foreign Born
60.0%+332% vs US avg
x
Single Parent
1.3%-84% vs US avg
x
Disability
9.4%-29% vs US avg
x
Uninsured
1.8%-78% vs US avg
x
SNAP Benefits
0.7%-94% vs US avg
x
Private School
0.0%
x
Recent Births
31.8%+447% vs US avg
x
Smartphone Only
0.0%
x

People & Community key statistics

Population statistics
Population
Population561
Median age53.0
Poverty rate8.4%
Demographics statistics
Demographics
White87.5%
Hispanic1.3%
Black1.1%
Asian0.0%
Foreign-born60.0%