Buffalo ZIP Code List — Harding County, SD

There is one unique ZIP code in Buffalo, South Dakota and it is 57720. Area code: 605.
1
ZIP codes
1,296.16
sq mi land
4.19
sq mi water
605
area code
Buffalo, SD ZIP code map

About Buffalo, SD

Buffalo, South Dakota, is a small city located in the northern part of the state. Nestled in Harding County, it offers a serene rural atmosphere characterized by the expansive landscapes of the region. The city is known for its close-knit community and scenic beauty, making it a unique place within South Dakota.

Location & geography

Buffalo is situated approximately 30 miles east of the Wyoming border and about 60 miles south of the North Dakota border. The surrounding terrain consists largely of rolling hills and open plains, contributing to its picturesque setting. The city covers a significant area of 1,296.16 square miles of land and 4.19 square miles of water, enhancing its natural charm.

Community & economy

The community of Buffalo is defined by its friendly residents and strong agricultural roots. Local industries primarily revolve around farming and ranching, with many residents engaged in producing cattle and crops. Daily life in Buffalo is tranquil, with a focus on community events and outdoor activities that highlight the area's natural beauty.

Transportation

Buffalo can be accessed via several state highways, with South Dakota Highway 85 providing a prominent route through the area. The nearest named airport is the Chadron Municipal Airport, located approximately 60 miles southwest of Buffalo, facilitating air travel for residents. Public transportation options are limited, reflecting the rural nature of the community.

History

Buffalo was founded in the late 19th century, emerging as a key settlement in Harding County due to its strategic location for agriculture and trade. Key industries have historically included livestock farming and ranching, which continue to be central to the local economy today. Over the years, Buffalo has hosted various events that celebrate its cultural heritage and community spirit.

Did you know?

One surprising fact about Buffalo, SD, is that it is part of the historically rich Black Hills region, known for its gold rush history. This area also offers recreational opportunities such as hiking, fishing, and wildlife watching in the surrounding natural landscapes.

ZIP codes for Buffalo, SD (1)
ZIP code City County Map
57720 Buffalo Harding View map

Demographics & statistics

695
Population
46.3
Median age
$72,031
Median household income
$49,147
Per capita income
$133,300
Median home value
$533
Median monthly rent
73.3%
Home ownership
7.6%
Poverty rate
3.7%
Unemployment
364
Housing units
26.5%
Bachelor's or higher

Age distribution

Male Female
16
Under 5
13
31
5–9
27
18
10–14
16
16
15–19
14
21
20–24
18
45
25–34
39
34
35–44
29
29
45–54
26
31
55–59
27
56
60–64
48
60
65–74
52
13
75–84
11
3
85+
2
← Male
Female →

Age summary

GroupCount%
Under 1814520.9%
18 and over55079.1%
65 and over14120.3%
Median age46.3 years

Race & ethnicity

White 84.7%
Two or more races 11.9%
Hispanic or Latino 1.4%
American Indian / Alaska Native 1.1%
Other race 0.9%
GroupCount%
White59784.7%
Two or more races8411.9%
Hispanic or Latino101.4%
American Indian / Alaska Native81.1%
Other race60.9%

Household income

$10k–$15k 5.6%
$15k–$25k 3.1%
$25k–$35k 1.9%
$35k–$50k 13.0%
$50k–$75k 28.3%
$75k–$100k 18.0%
$100k–$150k 14.3%
$150k–$200k 8.4%
$200k+ 7.5%
Range% of households
$10k–$15k5.6%
$15k–$25k3.1%
$25k–$35k1.9%
$35k–$50k13.0%
$50k–$75k28.3%
$75k–$100k18.0%
$100k–$150k14.3%
$150k–$200k8.4%
$200k+7.5%
Median income$72,031

Housing

Home values

Under $50k 8.1%
$50k–$100k 26.3%
$100k–$150k 19.9%
$150k–$200k 11.0%
$200k–$300k 25.4%
$300k–$500k 2.1%
$500k–$1M 5.1%
$1M+ 2.1%

Housing overview

MetricValue
Median home value$133,300
Median rent / month$533
Owner occupied73.3%
Renter occupied26.7%
Vacant28.4%
Single-family detached79.1%
Large apartment buildings0.0%
Mobile homes15.6%
Median rooms5.8
Avg household size (owned)2.12

Year built

Era%
2020 or later0.0%
2010–20198.7%
2000–20094.0%
1990–19996.4%
1980–198913.8%
1970–197913.1%
1960–19694.2%
1950–195913.6%
1940–194912.4%
1939 or earlier23.8%

Bedrooms

Size% of units
No bedroom (studio)2.9%
1 bedroom5.3%
2 bedrooms22.4%
3 bedrooms36.2%
4 bedrooms22.2%
5+ bedrooms10.9%

Vehicles per household

Vehicles% of households
No vehicle2.2%
1 vehicle24.5%
2 vehicles23.9%
3 or more49.4%

Heating fuel

Fuel type%
Utility gas2.8%
Electricity25.5%
Propane / LP gas67.1%
Fuel oil0.9%
Wood1.9%
No fuel used1.6%

Households & families

Household typeCount%
Married-couple family19259.6%
Cohabiting couple165.0%
Male householder, no spouse6520.2%
Female householder, no spouse4915.2%
Households with children under 188225.5%
Households with seniors (65+)11435.4%
Average household size2.16

Marital status

StatusMaleFemale
Never married23.4%16.3%
Married68.4%64.1%
Separated2.6%0.0%
Widowed1.0%9.6%
Divorced4.6%10.0%

Education

Less than 9th grade 1.8%
Some HS, no diploma 3.6%
HS graduate 31.5%
Some college, no degree 28.5%
Associate's degree 8.1%
Bachelor's degree 21.0%
Graduate / professional 5.5%
Metric%
HS diploma or higher94.7%
Bachelor's or higher26.5%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool75.7%
Kindergarten1713.8%
Elementary school5141.5%
High school3427.6%
College / grad school1411.4%

Employment

Industry of employment

Agriculture & mining 40.7%
Retail trade 14.6%
Construction 12.0%
Transportation & utilities 6.9%
Education & healthcare 6.2%
Professional & management 5.3%
Public administration 3.8%
Arts, food & hospitality 3.3%
Other services 2.4%
Finance & real estate 2.2%
Information 1.7%
Manufacturing 1.0%

Occupation

Category%
Management, business & arts49.0%
Service6.9%
Sales & office12.2%
Natural resources & construction16.5%
Production & transportation15.3%

Employment type

Type%
Private sector59.3%
Government11.5%
Self-employed27.3%
Unpaid family workers1.9%

Commute

Method%
Drive alone54.9%
Carpool7.1%
Public transit0.0%
Walk7.1%
Other means1.0%
Avg commute (minutes)10.7

Poverty

All people 7.6%
Under 18 years 2.1%
18 and over 9.1%
Married-couple families 3.6%
Female-led households 18.8%

Income support

Source% of households
Social Security31.7%
Retirement income10.9%
Supplemental Security1.2%
Cash public assistance6.5%
Food stamps / SNAP0.9%

Health indicators

Condition%
High blood pressure30.9%
High cholesterol31.1%
Heart disease6.6%
Stroke2.9%
Asthma8.7%
Arthritis23.5%
Kidney disease2.8%
Pulmonary disease5.8%
Cancer7.2%
Behavior / access%
Binge drinking20.2%
No physical activity21.3%
Less than 7 hrs sleep27.6%
Fair or poor health10.7%
Poor mental health10.5%
Poor physical health8.6%
No health insurance11.3%
Visited doctor (checkup)74.5%
Visited dentist68.5%
Cholesterol screening89.3%
Teeth loss12.7%

Veterans & disability

VeteransCount%
Civilian veterans519.3%
Disability%
Any disability8.3%
Under 182.1%
18–64 years3.7%
65 and over28.4%

Health insurance coverage

Type%
Private insurance84.3%
Public insurance34.8%
Uninsured under 190.0%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only66695.8%
Spanish00.0%
Other Indo-European00.0%
Asian & Pacific Islander00.0%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)68298.1%
Born in same state67597.1%
Born in different state41659.9%
Foreign born71.0%
Naturalized citizen131.9%
Not a US citizen430.8%

Ancestry

AncestryCount%
Polish17625.3%
Italian9714%
French476.8%
Arab223.2%
AncestryCount%
English71%
Dutch71%
German10.1%

Technology access

Metric% of households
Computer access46.3%
Internet access93.2%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions
What is the ZIP code for Buffalo, SD?
Buffalo, SD has one ZIP code: 57720.
What is the main ZIP code for Buffalo, SD?
The primary ZIP code for Buffalo, SD is 57720. The city uses area code 605 for phone service.
What county is Buffalo, SD in?
Buffalo is located in Harding County, South Dakota.
How many ZIP codes are in Buffalo, SD?
Buffalo, SD has 1 ZIP code.
What is the ZIP code for Buffalo's downtown area and main business district?
Buffalo's downtown area, located in Harding County, uses ZIP code 57720, which serves as the primary ZIP code for the city's commercial and civic center.
What ZIP code should I use for mailing packages to businesses in Buffalo, South Dakota?
All mailing addresses for Buffalo businesses and residents should use ZIP code 57720, as this is the sole ZIP code serving the entire city.
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