Douglas County Flag

Douglas County

State:
South Dakota
County Seat:
Armour

Douglas County's estimated 2026 population is 2,908 with a growth rate of 0.69% in the past year according to the most recent United States census data. Douglas County is the 48th largest county in South Dakota. The 2010 population was 2,991 and has seen a growth of -2.77% since that time.

2,908
Total Population
7
Population Density (mi²)
48
Population Rank (State)
20 0.69%
Annual Population Growth

Douglas County Population

Demographics

Economics and Income Statistics