Buffalo County, South Dakota Population 2024

1,759

Buffalo County, South Dakota's estimated 2024 population is 1,759 with a growth rate of -2.82% in the past year according to the most recent United States census data. Buffalo County, South Dakota is the 59th largest county in South Dakota. The 2010 population was 1,934 and has seen a growth of -9.05% since that time.

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
20291,504-51-3.28%
20281,555-51-3.18%
20271,606-51-3.08%
20261,657-51-2.99%
20251,708-51-2.9%
20241,759-51-2.82%
20231,810-51-2.74%
20221,861-51-2.67%
20211,912-26-1.34%
20201,938-44-2.22%
20191,982-57-2.8%
20182,039251.24%
20172,014-21-1.03%
20162,035-64-3.05%
20152,099120.57%
20142,087623.06%
20132,02590.45%
20122,016371.87%
20111,979452.33%
20101,934
19901,759-36-2.01%
19801,795563.22%
19701,73919212.41%
19601,547-68-4.21%
19501,615-238-12.84%
19401,853-78-4.04%
19301,93121612.59%
19201,7151267.93%
19101,589-201-11.23%
19001,79079780.26%
18909939301476.19%
188063-183-74.39%
1870246-1,258-83.64%
showing: 33 rows
2024 Growth Rate
-2.82% (-51)
County Seat
2020 Population
1,938
Area
471 mi²
Density
4 people/mi²
Growth Since 2020
-9.24% (-179)
Founded
1871

Buffalo County, South Dakota Population 2024

Population by Race

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Race
Population
Percentage (of total)
Native American1,47279.18%
White35218.93%
Two or more races191.02%
Other race160.86%
Black or African American
Asian
Native Hawaiian or Pacific Islander
showing: 7 rows

Native American

White

Two or more races

Other race

Black or African American

Asian

Native Hawaiian or Pacific Islander

Buffalo County, South Dakota Population by Race

Buffalo County, South Dakota Population Pyramid 2024

Buffalo County, South Dakota Median Age

24

Total

24.8

Male

22.9

Female

Buffalo County, South Dakota Adults

There are 1,152 adults, (140 of whom are seniors) in Buffalo County, South Dakota.

Buffalo County, South Dakota Age Dependency

83.7

Age Dependency Ratio

13.8

Old Age Dependency Ratio

69.9

Child Dependency Ratio

Buffalo County, South Dakota Sex Ratio

Female86746.64%
Male99253.36%

Buffalo County, South Dakota Population by Age

Buffalo County, South Dakota Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All4923.774951
Non Family1611.1449.150.9
Married1424.8952.847.2
Female1175.6141.958.1
Male724.552.847.2
showing: 5 rows

4.71

Average Family Size

3.77

Average Household Size

49.0%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Buffalo County, South Dakota Households and Families

Male

Female

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Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Buffalo County, South Dakota Educational Attainment by Sex (over 25)

Buffalo County, South Dakota Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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The highest rate of high school graduation is among other race people with a rate of 100%.

The highest rate of bachelors degrees is among other race people with a rate of 100%.

Buffalo County, South Dakota Educational Attainment by Race

All

Male

Female

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$31,250

Average Earnings

$32,703

Average Male

$26,750

Average Female

Buffalo County, South Dakota Earnings by Educational Attainment

Buffalo County, South Dakota Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Buffalo County, South Dakota Language

93.78% of Buffalo County, South Dakota residents speak only English, while 6.22% speak other languages. The non-English language spoken by the largest group is Other languages, which is spoken by 6.22% of the population.

Buffalo County, South Dakota Language

Buffalo County, South Dakota Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
Native1,45862943.14%
White3414412.9%
Hispanic1492718.12%
showing: 3 rows

36.52%

Overall Poverty Rate

34.66%

Male Poverty Rate

38.61%

Female Poverty Rate

Poverty in Buffalo County, South Dakota

The race most likely to be in poverty in Buffalo County, South Dakota is Native, with 43.14% below the poverty level.

The race least likely to be in poverty in Buffalo County, South Dakota is White, with 12.9% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 8%. Among those working part-time, it was 34.26%, and for those that did not work, the poverty rate was 52.42%.

Buffalo County, South Dakota Poverty

rate

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Rate
Poverty
Less Than 9th Grade64.38%
High School39.95%
Some College21.68%
Bachelors or Greater16.13%
showing: 4 rows

Buffalo County, South Dakota Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed64.58%
Male Unemployed51.79%
Male Employed20%
Female Employed17.24%
showing: 4 rows

Buffalo County, South Dakota Poverty Rate by Employment Status and Sex

Buffalo County, South Dakota Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Buffalo County, South Dakota Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

28.2%

Overall Marriage Rate

30.7%

Male Marriage Rate

25.4%

Female Marriage Rate

Buffalo County, South Dakota Married by Age and Sex

male

female

Buffalo County, South Dakota Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 55-64.

Buffalo County, South Dakota Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Buffalo County, South Dakota Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

95

Number of Veterans

85

Male Veterans

10

Female Veterans

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Buffalo County, South Dakota Veterans by War

count

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Buffalo County, South Dakota Veterans by Age

count

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Buffalo County, South Dakota Veterans by Race

Buffalo County, South Dakota Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

8.42%

Veteran Poverty Rate

38.95%

Veteran Disability Rate

Buffalo County, South Dakota Veterans by Education

LaborForceParticipation

56%

Labor Force Participation

47.6%

Employment Rate

14.9%

Unemployment Rate

Buffalo County, South Dakota Employment by Age

LaborForceParticipation

Buffalo County, South Dakota Employment by Race

LaborForceParticipation

Buffalo County, South Dakota Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

93.22%

Born in Buffalo County, South Dakota

100%

Native Born

Foreign Born

Non Citizen

Naturalized

Place of Birth

100% of Buffalo County, South Dakota residents were born in the United States, with 93.22% having been born in South Dakota. of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Buffalo County, South Dakota Place of Birth

Sources