Oacoma town, South Dakota
Official LSAD Designation: Oacoma town • Census GEOID: 4646180
• Lyman County
Demographics & Population Profile
Population and demographics for Oacoma town.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 391 | — | 2025 | Census |
| Median Age | 40.2 yrs | ±6.3 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 242 | ±50 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).