Buffalo County, SD Population

The population of Buffalo County is 1,974, according to the U.S. Census Bureau ACS estimates.
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Updated Jun 23, 2023
Overview
1,974
Total Population
25.4
Median age
48.02%
Female population %
108.2:100
Gender ratio (M:F)
0-4 years
Largest age group
62.3
Total dependency ratio
American Indian and Alaska Native
Largest racial group
153
Hispanic population

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

Age

Buffalo County's population is young compared to the rest of the country:

  • The median age in Buffalo County is 25.4, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
  • Buffalo County's population under 18 was 38.30%, compared to the 22.51% nationwide.
  • Buffalo County's elderly or the senior population (over 65 age) was 7.50% as compared to 16.04% nationwide.
  • Of the total population in Buffalo County, 30.90% were under the age of 15, 24.52% aged 15 to 29, 37.08% aged 30 to 64, 7.14% aged 65 to 84, and 0.35% were 85 years of age and older.
The graph shows Buffalo County's population by age group, with age group on x-axis and the respective age group's percent of the total population on y-axis
Buffalo County, SD population by age group. The largest age group was 0-4 years with a poulation of 239 (12.11% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Read more about Buffalo County, SD population by age ➔

Gender

There are 78 less females than males in Buffalo County:

  • The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 48.02% females and 51.98% males in Buffalo County, SD.
  • The Buffalo County, SD gender ratio is 108.2:100 i.e. 108.2 men to 100 women (1.082).
  • For male population, the largest age group is 0-4 years with a population of 128.
  • For the female population, the largest age group is 0-4 years with a population of 111.
The grouped bar chart shows Buffalo County, SD population by age and gender across 18 age groups, defined between the age of 0 and 85 and above. The female population is shown in pink color bar and male population is shown in blue color bar. Age group is plotted on x axis and population on y axis.
California population by gender and age. Largest age group (population): Male # 0-4 years (128) | Female # 0-4 years (111). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Read more about Buffalo County, SD population by gender ➔

Race / Ethnicity

Buffalo County's population is moderately diverse:

  • Racial distribution of Buffalo County population: 14.44% are White, 83.84% are American Indian and Alaska Native, 0.81% are some other race and 0.91% are multiracial.
  • Buffalo County's racial breakdown clearly shows that there is an absolute majority of American Indian and Alaska Native population in the county.
  • By ethnicity, 153 is Hispanic or Latino (of any race), and 1,821 (92.25% of the total population) is Non-Hispanic.
  • The largest racial group in Buffalo County is American Indian and Alaska Native with a population of 1,655 (83.84% of the total population).
The bar chart shows Buffalo County, SD population by race, in percentage. The numbers shown are based on the American Community Survey respondents self identified race. The Hispanic and Latino population is spread across the races identified and not as a separate race category.
Buffalo County, SD population by race. The largest racial group in Buffalo County is American Indian and Alaska Native with a population of 1,655 (83.84% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Read more about Buffalo County, SD population by race ➔

Year by year

Buffalo County's population has already reached its peak and is showing a trend of decline:

  • The peak population was 2,133 in the year 2008
  • From 2000 to 2010, Buffalo County's population decreased by 62 (3.11%), as compared to the national growth of 9.63%.
  • From 2010 to 2020, Buffalo County's population increased by 4 (0.21%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
  • Between the year 2000 and 2022, Buffalo County's population was lowest in year 2022 at 1,861.
The graph shows Buffalo County's population from 2000 to 2022, with years on x-axis and population on y-axis
Buffalo County's population from 2000 to 2022. The estimated population at the end of 2022 was 1,861. Source: U.S. Census Bureau (Population Estimates Program)

Read more about Buffalo County, SD population by year ➔

References

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Neilsberg Research
Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.

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