Fall River County, South Dakota Cities (2025)

7 cities

City
Rank
2025 Pop. ↓
2020 Pop.
Annual Change
Density
Area (mi²)
Type
Hot Springs13,6603,3991.44%8434 City
Edgemont27667290.92%5541 City
Oelrichs31271190.79%3480 Town
Oral455737.84%332 CDP
Provo535322.94%136 Township
Smithwick624119.09%122 CDP
Argentine718170%136 Township

Fall River County Cities Summary

Largest City

Hot Springs is the largest city in Fall River County, with a population of 3,660.

Smallest City

Argentine is the smallest city in Fall River County, with a population of 18.

10 Largest Cities

There are 7 cities in Fall River County, South Dakota.

Location of Fall River County