Buffalo County, South Dakota Population 2021

Buffalo County, South Dakota's estimated population is 1,832 with a growth rate of -3.43% in the past year according to the most recent United States census data. Buffalo County, South Dakota is the null largest county in South Dakota. The 2010 Population was 1,934 and has seen a growth of -5.27% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Growth Rate
20211,832-65-3.43%
20201,897-65-3.31%
20191,962-65-3.21%
20182,027140.70%
20172,013-17-0.84%
20162,030-68-3.24%
20152,098120.58%
20142,086613.01%
20132,02590.45%
20122,016381.92%
20111,978442.28%
20101,9341759.95%
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%
18702460.00%
2021 Growth Rate
-3.43%
County Website
Founded
1871
County Seat
2010 Population
1,934
Growth Since 2010
-5.27%
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Buffalo County, South Dakota Population Growth

Population by Race

Race Population Percentage
American Indian and Alaska Native1,72084.90%
White28213.92%
Two or More Races211.04%
Black or African American30.15%
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Buffalo County, South Dakota Population By Race

Buffalo County, South Dakota Population Pyramid 2021

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Buffalo County, South Dakota Median Age

25.8


Total

24.5


Male

27.6


Female

Buffalo County, South Dakota Adults

There are 1,259 adults, (146 of whom are seniors) in Buffalo County, South Dakota.

Buffalo County, South Dakota Age Dependency

82

Age Dependency Ratio

13.1

Old Age Dependency Ratio

68.9

Child Dependency Ratio

Buffalo County, South Dakota Sex Ratio

Mujer

1,018

50.25%

Masculino

1,008

49.75%

Buffalo County, South Dakota Population by Age

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

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Buffalo County, South Dakota Household Types

Type Owner Renter
Non Family58.5%41.5%
Married47.2%52.8%
All46.3%53.7%
Masculino42%58%
Mujer37.9%62.1%

46.3%

Rate of Home Ownership

Buffalo County, South Dakota Households and Families

Type Count Average Size Owned
All5643.5946.3
Mujer1904.3237.9
Married1634.6147.2
Non Family1421.1158.5
Masculino694.2542

4.09

Average Family Size

3.59

Average Household Size

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Buffalo County, South Dakota Households by Type

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Education Attained Count Percentage
Less Than 9th Grade313.00%
9th to 12th Grade19518.88%
High School Graduate40939.59%
Some College22321.59%
Associates Degree878.42%
Bachelors Degree716.87%
Graduate Degree171.65%
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Buffalo County, South Dakota Educational Attainment by Sex (over 25)

Buffalo County, South Dakota Educational Attainment by Race

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Race Total High School Bachelors
Native American83361740
White18317648
Hispanic2718
2+ Races96
Black33

The highest rate of high school graduation is among black people with a rate of 100.00%.

The highest rate of bachelors degrees is among white people with a rate of 26.23%.

Buffalo County, South Dakota Educational Attainment by Race

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Name Average Masculino Mujer
Overall$24,205$30,278$21,509
Less Than 9th Grade$19,432$31,000$17,969
High School Graduate$20,167$21,250$19,554
Some College$30,962$34,583$28,750
Bachelors Degree$$43,571$16,719
Graduate Degree$$$

$24,205

Average Earnings

$30,278

Average Male

$21,509

Average Female

Buffalo County, South Dakota Earnings by Educational Attainment

Buffalo County, South Dakota Language by Age

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Buffalo County, South Dakota Language

89.70% of Buffalo County, South Dakota residents speak only English, while 10.30% speak other languages. The non-English language spoken by the largest group is Other languages, which is spoken by 10.13% of the population.

Buffalo County, South Dakota Language

Buffalo County, South Dakota Poverty by Race

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Name Total In Poverty Poverty Rate
Native1,70074643.88%
White2733613.19%
Multiple211257.14%
Hispanic77911.69%

39.66%

Overall Poverty Rate

39.54%

Male Poverty Rate

39.78%

Female Poverty Rate

Poverty in Buffalo County, South Dakota

The race most likely to be in poverty in Buffalo County, South Dakota is Multiple, with 57.14% below the poverty level.

The race least likely to be in poverty in Buffalo County, South Dakota is Hispanic, with 11.69% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 9.76%. Among those working part-time, it was 36.20%, and for those that did not work, the poverty rate was 59.53%.

Buffalo County, South Dakota Poverty

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Name Poverty
Less Than 9th Grade52.65%
High School39.61%
Some College23.23%
Bachelors or Greater19.32%

Buffalo County, South Dakota Poverty Rate by Education

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Name Poverty
Female Unemployed62.86%
Male Unemployed44.55%
Female Employed21.77%
Male Employed13.78%

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

Buffalo County, South Dakota Income by Household Type

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Name Median Mean
Households$34,808$41,952
Families$33,462$41,205
Married Families$61,125-
Non Families$23,833$33,600
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Income by Household Type

Buffalo County, South Dakota Marital Status

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Marriage Rates

28.1%

Overall Marriage Rate

29.2%

Male Marriage Rate

27.0%

Female Marriage Rate

Buffalo County, South Dakota Married by Age and Sex

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Buffalo County, South Dakota Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 45-54.

Buffalo County, South Dakota Marital Status by Race

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Buffalo County, South Dakota Marital Status

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100

Number of Veterans

92

Male Veterans

8

Female Veterans

War Veterans
Vietnam31
First Gulf War20
Korea11
Second Gulf War8
World War II3

Buffalo County, South Dakota Veterans by War

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Age Group Veterans
35 to 5435
65 to 7426
55 to 6423
75+16
18 to 34

Buffalo County, South Dakota Veterans by Age

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Name Veterans % of Total
Native American777.34%
White2311.62%

Buffalo County, South Dakota Veterans by Race

Buffalo County, South Dakota Veterans by Education

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24.00%

Veteran Poverty Rate

33.00%

Veteran Disability Rate

Buffalo County, South Dakota Veterans by Education

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57.3%

Labor Force Participation

44.6%

Employment Rate

22.3%

Unemployment Rate

Buffalo County, South Dakota Employment by Age

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Buffalo County, South Dakota Employment by Race

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Buffalo County, South Dakota Employment by Education

Origin of Non-Citizens

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

Origin of Naturalized Citizens

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92.60%

Born in Buffalo County, South Dakota

100.00%

Native Born

0.00%

Foreign Born

0.00%

Non Citizen

0.00%

Naturalized

Place of Birth

100.00% of Buffalo County, South Dakota residents were born in the United States, with 92.60% having been born in South Dakota. 0.00% 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

  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990

Sources