Oglala Lakota County, South Dakota Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 15th-largest in South Dakota
The population of Oglala Lakota County, South Dakota is 13,587 as of the 2023 American Community Survey, making it the 15th-largest county in South Dakota. The median household income is $34,769, the median home value is $45,600, and the median age is 27.0.
The population of Oglala Lakota County has declined 2.0% since 2010 (13,636 → 13,360), a -0.15% annualized rate.
13,587
Population
-0.15%
Annual growth
6
People / sq mi
$34,769
Median Income
$45,600
Median Home Value
Oglala Lakota County covers 2,094 sq mi of land at 6.5 people per square mile.
About Oglala Lakota County, SD
Oglala Lakota County is a county in South Dakota with a population of 13,587. It ranks #15 among counties in South Dakota by population. The median age is 27.0, younger than the national median. The population is 48.7% male and 51.3% female.
The median household income in Oglala Lakota County is $34,769, below the US median of $74,580. 48.8% of residents live below the federal poverty level. Home values sit at a median of $45,600, with monthly rent averaging $563. The homeownership rate of 53.5% is lower than the national rate of 64.8%.
Educational attainment in Oglala Lakota County reflects 9.8% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 2.3% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 14.9 minutes each way.
Oglala Lakota County Population History (2010-2024)
The county of Oglala Lakota County had a population of 13,636 in 2010 and 13,360 in 2024, a -2.0% growth over 14 years. The peak was 14,426 in 2016. Average annual growth rate: -0.14%.
13,360
Population (2024)
13,636
Population (2010)
14,426
Peak (2016)
-0.14%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 13,636 |
| 2011 | 13,897 |
| 2012 | 14,041 |
| 2013 | 14,130 |
| 2014 | 14,217 |
| 2015 | 14,364 |
| 2016 | 14,426 |
| 2017 | 14,392 |
| 2018 | 14,324 |
| 2019 | 14,171 |
| 2020 | 13,648 |
| 2021 | 13,559 |
| 2022 | 13,482 |
| 2023 | 13,407 |
| 2024 | 13,360 |
Race & Ethnicity
| White | 6.6% |
| Black or African American | 0.1% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 92.3% |
| Two or More Races | 0.0% |
Age & Sex
27.0
Median Age
51.3%
Female
48.7%
Male
7.0%
Age 65+
Age Distribution
Children (under 15): 30.2% · Seniors (65+): 7.0%
Income & Poverty
| Median household income | $34,769$-37,652 vs state |
| Mean household income | $50,403 |
| Per-capita income | $11,650 |
| Poverty rate | 48.8%+41.4% vs state |
| Unemployment rate | 5.0% |
| Employment-to-population | 33.3% |
Top Industries by Employment
The largest employment sector in Oglala Lakota County is professional & business services, accounting for 38.9% of workers.
How residents commute
0.0%
Drive alone
5.3%
Carpool
66.6%
Public transit
2.3%
Work from home
14.9 min
Avg commute
Housing
$45,600$-191,200 vs state
Median home value
$563
Median rent
53.5%
Homeownership rate
3,461
Total housing units
78.9%
Occupied
21.1%
Vacant
46.5%
Renter-occupied
Social & access
56.5%
With health insurance
75.1%
With broadband internet
10.8%
Foreign-born
3.7%
Veterans (18+)
9.9%
With a disability
86.2%
Speak language other than English at home
Education
78.0%
High School+
9.8%
Bachelor's+
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Other counties in South Dakota
Part of South Dakota
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County rankings
Frequently Asked Questions
Oglala Lakota County, South Dakota has a population of 13,587 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 15th-largest county in South Dakota. Population density is 6 people per square mile.
The population of Oglala Lakota County has declined 2.0% since 2010 (13,636 → 13,360), a -0.15% annualized rate.
The median household income in Oglala Lakota County, South Dakota is $34,769, with mean (average) household income of $50,403 and per-capita income of $11,650. 48.8% of residents live below the federal poverty level.
In Oglala Lakota County, the largest racial and ethnic groups are Hispanic or Latino (92.3%), White (6.6%), Black or African American (0.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Oglala Lakota County, South Dakota is 27.0 years. Residents are 51.3% female and 48.7% male.
The median home value in Oglala Lakota County is $45,600 and median monthly rent is $563. 53.5% of occupied housing units are owner-occupied. The county has 3,461 total housing units, 21.1% of which are vacant.
The largest employment sector in Oglala Lakota County, South Dakota is professional, scientific, and management services, employing 38.9% of workers. The unemployment rate is 5.0%.
Sioux Falls is among the largest cities associated with Oglala Lakota County, South Dakota, with a population of 197,642.
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Statewide data for South Dakota
Population, race, income, age, and trends across South Dakota
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.