Each edition grades its towns against each other only.
A town of 109, platted in 1880.
22% of residents live below the poverty line in Altamont Township, above both the South Dakota town median (9.5%) and the median of U.S. towns (9.6%). Only 1 of the 36 South Dakota towns we compare have a lower July high than Altamont Township. 62% of the land in Altamont Township is conserved, above both the South Dakota town median (3.3%) and the median of U.S. towns (4.3%). The biggest park or preserve is Crystal Springs GPA, at 512 acres. Altamont 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: 110 in 1910, a peak of 144 in 1940, 32 in 2020. The archive holds 1 old photo or paper going back to 2004 and 2 maps from 1973 on.
Who provides power, water and the rest in Altamont 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 Altamont Township.
2.5 miles of trail in 10 parks and preserves. Only 2 of the 33 South Dakota towns we compare have a lower trail density than Altamont Township.
| Biggest places to walk | Trails | Acres |
|---|---|---|
| 1. Lake Ketchum GPA | 0.4 mi | 174 |
| 2. Crystal Springs GPA | 0.2 mi | 512 |
| 3. Rush Lake GPA | — | 323 |
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
Most working residents leave Altamont Township for work: only 0% work in town. The top destinations are Watertown (18%), Brookings (10%) and Clear Lake (8%). Half commute less than 24 miles.
Census LEHD 2023 · ACS
Altamont Township has cold, snowy winters and pleasant summers. Altamont Township’s January low is 4°F.
NOAA U.S. Climate Normals, 1991–2020
Expected storm and flood damage is lower than in 64% of U.S. communities.
FEMA National Risk Index · OpenFEMA
Altamont Township beats the South Dakota average on 2 of 26 CDC measures and trails it on 5. 29% of adults sleep under 7 hours in Altamont Township.
| Altamont Township | South Dakota towns | U.S. towns | |
|---|---|---|---|
| Sleep under 7 hours (CDC PLACES) | 29% | 30% | 36% |
| Frequent mental distress (CDC PLACES) | 15% | 15% | 17% |
| Diabetes (CDC PLACES) | 13% | 10% | 12% |
| High blood pressure (CDC PLACES) | 36% | 31% | 35% |
| What stands out | Altamont Township | SD |
|---|---|---|
| More adults treating high blood pressure | 79.6% | 75.9% |
| More adults getting cholesterol checked | 87% | 84.8% |
| More adults with heart disease | 8.3% | 6.8% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
None within 15 miles of Altamont Township; the nearest are
About 0 of every 100 Altamont Township residents are enrolled in college, against 5 across South Dakota.
61.5% of the town is conserved land, across 10 parks and preserves.
Town in South Dakota, United States
Altamont is a town in Deuel County, South Dakota, United States. The population was 32 at the 2020 census.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
Short answers, built from the data on this page.
Altamont Township has fewer than 1,000 residents, too few for fair grades; the figures below are still real.