Olean Flag

Olean

County:
Spink County
County Seat:
No
Area (mi²):
36.088
State:
South Dakota

Olean is located in Spink County, South Dakota. Olean has a 2025 population of 39 . Olean is currently declining at a rate of -2.5% annually and its population has decreased by -7.14% since the most recent census, which recorded a population of 42 in 2020.

39
Total Population
1
Density (mi²)
-1 -2.5%
Growth

Olean Population

Olean Population

Data after 2023 is projected based on recent change

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)