Each edition grades its towns against each other only.
A town of 82, laid out in 1891.
24% of residents live below the poverty line in Oacoma Township, above both South Dakota’s towns (9.5%) and U.S. towns (9.6%). No town among the 36 in South Dakota we compare has a higher share of adults with a bachelor’s degree than Oacoma Township. 24% of the land in Oacoma Township is conserved, where South Dakota’s towns sit at 3.3% and U.S. towns at 4.3%. Oacoma Township has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
In a town this size, neighbors are the best guide. Ask them anything.
Census counts: 235 in 1910, 386 in 2020. The archive holds 7 old photos and papers going back to 2004 and 2 maps from 1935 on.
Who provides power, water and the rest in Oacoma Township, and how to reach them.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Aug 3, 2026.
Ordered by what stands out in Oacoma Township.
Expected storm and flood damage is higher than in 85% of U.S. communities.
FEMA National Risk Index · OpenFEMA
29 miles of trail in 0 parks and preserves.
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
Oacoma Township has cold, snowy winters and warm summers, with very little rain. The July high in Oacoma Township is 88°F.
NOAA U.S. Climate Normals, 1991–2020
27% of Oacoma Township adults sleep under 7 hours. Oacoma Township beats the South Dakota average on 6 of 26 CDC measures and trails it on 2. 17% of Oacoma Township adults binge drink.
| Oacoma Township | South Dakota towns | U.S. towns | |
|---|---|---|---|
| Sleep under 7 hours (CDC PLACES) | 27% | 30% | 36% |
| Frequent mental distress (CDC PLACES) | 13% | 15% | 17% |
| Depression (CDC PLACES) | 19% | 22% | 23% |
| High blood pressure (CDC PLACES) | 38% | 31% | 35% |
| What stands out | Oacoma Township | SD |
|---|---|---|
| Fewer uninsured adults | 6.7% | 8.8% |
| Fewer older adults who have lost all their teeth | 10% | 12.7% |
| More adults who have had cancer | 11.6% | 9.2% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
None within 15 miles of Oacoma Township; the nearest are
About 0 of every 100 Oacoma Township residents are enrolled in college, against 5 across South Dakota.
Town in South Dakota, United States
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.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
Short answers, built from the data on this page.
Oacoma Township has fewer than 1,000 residents, too few for fair grades; the figures below are still real.