Oacoma
Town in Lyman County, South Dakota

Oacoma is a town in Lyman County, South Dakota, with 386 residents (2020 Census). It sits at 1,385 ft (422 m) above sea level. The nearest town is Chamberlain, 1.9 miles E.
- 386residents (2020 Census)
- 1,385 ftelevation · 422 m
- 2.6 sq miland area · 6.8 km²
- 147 / sq mipopulation density
- 57365ZIP code
About Oacoma
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.
Text: Wikipedia · CC BY-SA 4.0
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Living in Oacoma
- Median household income
- $73,333
- Median home value
- $171,700
- Median rent
- $883/mo
- Median age
- 40.2
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Map of Oacoma
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Open in Google Maps ›Oacoma, SD population
Oacoma had 386 residents in the 2020 Census.
| 2020 Census | 386 |
|---|---|
| Density | 147 per sq mi (57 per km²) |
Source: U.S. Census Bureau, Decennial Census.
Oacoma at a glance
| State | South Dakota (SD) |
|---|---|
| County | Lyman County |
| Type | Town |
| Population | 386 (2020) |
| Land area | 2.63 sq mi (6.8 km²) |
| Water area | 1.76 sq mi (4.56 km²) |
| Elevation | 1,385 ft (422 m) |
| Coordinates | 43.8045° N, 99.3661° W |
| ZIP code | 57365 |
| Census code (GEOID) | 4646180 |
Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.
Towns near Oacoma
- Chamberlain1.9 mi E
- Pukwana9.2 mi E
- Reliance12.8 mi NW
- Ola16.1 mi SE
- Fort Thompson17.1 mi N
- Kimball20.8 mi E
- Lower Brule21.5 mi NW
- Hamill21.9 mi SW
- Bijou Hills22.1 mi SE
- West Brule23.0 mi NW
- Gann Valley24.6 mi NE
- Kennebec25.6 mi W
Straight-line distance between town centers.
Frequently asked questions about Oacoma
What county is Oacoma in?
Oacoma is in Lyman County, South Dakota.
What is the population of Oacoma, SD?
386 people lived in Oacoma at the 2020 Census.
What is the ZIP code of Oacoma, SD?
The ZIP code of Oacoma is 57365.
What is the elevation of Oacoma?
1,385 feet (422 m) above sea level.
What towns are near Oacoma?
Chamberlain (1.9 mi), Pukwana (9.2 mi), Reliance (12.8 mi), Ola (16.1 mi), Fort Thompson (17.1 mi).
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