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Trip Planner USA  /  South Dakota  /  Oacoma


Flea Markets
Oacoma is a town in Lyman County, South Dakota, United States. The population was 451 at the 2010 census. Oacoma is located on the west bank of the Missouri River, across from Chamberlain.HistoryOn September 17, 1804, Lewis and Clark camped on the west bank of the Missouri River near American Island where Oacoma is now located. During the remainder of the 19th century the area was a stopping off place for explorers, fur traders and steamboat men. The township of Oacoma was laid out in 1891 as the county seat for the newly formed Lyman County; the seat was transferred to Kennebec in 1922. The Chicago, Milwaukee, St. Paul and Pacific Railroad arrived to Oacoma in 1905 and Oacoma was known as a "banking post-village". In the 21st century, it is a rest stop for travelers on Interstate 90.GeographyOacoma is located at. According to the United States Census Bureau, the town has a total area of 4.18sqmi, of which 2.59sqmi is land and 1.59sqmi is water.Demographics2010 censusAs of the census of 2010, there were 451 people, 205 households, and 135 families residing in the town. The population density was 174.1PD/sqmi. There were 236 housing units at an average density of 91.1/sqmi. The racial makeup of the town was 88.9% White, 0.2% African American, 6.4% Native American, 0.4% Asian, 0.7% from other races, and 3.3% from two or more races. Hispanic or Latino of any race were 1.8% of the population.
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