Douglas County, South Dakota Cities (2024)

Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)

City
Rank
2024 Pop.
2020 Pop.
Change
Density (/mi²)
Area (mi²)
Type
Armour17056960.28%7470.9City
Corsica2554561-0.36%6620.8City
Delmont3152154-0.65%1990.8City
Old Elm Spring Colony44609.52%471.0CDP
Milltown529257.41%660.4CDP
Harrison6870%740.1CDP
New Holland75825%430.1CDP

Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.

What is the largest city in Douglas County, South Dakota?

Armour is the largest city in Douglas County.

What is the smallest city in Douglas County, South Dakota?

New Holland is the smallest city in Douglas County.

How many cities are in Douglas County?

There are 7 cities in Douglas County, South Dakota.

Frequently Asked Questions