Oacoma, South Dakota

Oacoma, South Dakota
Town
Downtown Oacoma
Motto: 
"One Day Just Isn't Enough"
Location in Lyman County and the state of South Dakota
Coordinates: 43°48′13″N 99°22′20″W / 43.80361°N 99.37222°W / 43.80361; -99.37222
CountryUnited States
StateSouth Dakota
CountyLyman
Founded1890
Area
  Total
4.19 sq mi (10.86 km2)
  Land2.60 sq mi (6.75 km2)
  Water1.59 sq mi (4.11 km2)
Elevation
1,401 ft (427 m)
Population
 (2020)
  Total
386
  Density148.23/sq mi (57.22/km2)
Time zoneUTC-6 (Central (CST))
  Summer (DST)UTC-5 (CDT)
ZIP code
57365
Area code605
FIPS code46-46180
GNIS feature ID1267519
Websiteoacomasd.com

Oacoma is a town in Lyman County, South Dakota, United States. The population was 386 at the 2020 census. Oacoma is located on the west bank of the Missouri River, across from Chamberlain, South Dakota.