How many people live in Buffalo County, SD?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 1,800 people living in Buffalo County, SD. That makes Buffalo County the 60th-most populous county in South Dakota. It is home to 0.2% of people living in the state.
1.83K
population of Buffalo County, SD (2024)
0.2%
County share of the South Dakota population (2024)
About 1,800 people lived in Buffalo County, SD in 2024.
Population estimates, 2000–2024
What are Buffalo County, SD’s age demographics?
About 197 Buffalo County, SD residents are aged 65 and older in 2024. That represents 10.8% of its population. For comparison, the age group represents 18.9% of South Dakota’s population and 18% in the US overall.
Another 653 Buffalo County residents, or 35.8% of the population, were children under 18. For comparison, the age group represents 24% of South Dakota’s population and 21.6% in the US overall.
A higher share of Buffalo County, SD's population is aged under 18 than the US as a whole.
Population estimates by age group, (2024)
What are Buffalo County, SD’s racial and ethnic demographics?
Non-Hispanic American Indian and Alaska Native residents make up 77.8% of the Buffalo County, SD population, higher than the national share of 0.72%. Buffalo County, SD also has a larger share of people identifying as non-Hispanic two or more races (3.4%) than the US overall (2.5%).
In contrast, Buffalo County’s non-Hispanic white population accounts for 15.1%, below the 57.5% nationwide, and the Hispanic population makes up 2.7% of the county, compared with 20% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Buffalo County, SD has a higher share of a non-Hispanic American Indian and Alaska Native population than South Dakota as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Buffalo County, SD is Crow Creek UT with about 1,700 residents in 2024.
Cities and towns in Buffalo County, SD ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Crow Creek UT | 1,658 |
| 2. | North Buffalo UT | 84 |
| 3. | Southeast Buffalo UT | 42 |
| 4. | Elvira | 41 |
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
