St. OngeSD
40 people live in this town, settled in 1881.
Is St. Onge a good place to live?
100% of adults 25 and older hold a bachelor’s degree or more in St. Onge, above both the South Dakota town median (33%) and the median of U.S. towns (29%). Of the 36 South Dakota towns we compare, none has a higher share of homes lived in by their owners than St. Onge. St. Onge has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
40 people, and everyone knows the way
In a town this size, neighbors are the best guide. Ask them anything.
Moving to St. Onge: who provides what
St. Onge is unincorporated, so Lawrence County and regional agencies provide most services.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Aug 3, 2026.
The data
Ordered by what stands out in St. Onge.
With only 0.1 jobs per working resident, most people in St. Onge work out of town
For most workers, St. Onge is a place to come home to: only 1% work in town. The top destinations are Spearfish (25%), Rapid City (23%) and Sturgis (9%). The median commute is under 13 miles.
Where working residents work
Census LEHD 2023 · ACS
The biggest natural risk in St. Onge is inland flooding, at a high overall level
40% of St. Onge’s expected losses from natural hazards come from inland flooding, followed by wildfires at 26%. Compared with 70% of U.S. communities, expected storm and flood damage in the town is higher.
FEMA National Risk Index · OpenFEMA
Expect snowy winters and pleasant summers in St. Onge
The July high for St. Onge comes to 87°F.
Typical low → high °F
NOAA U.S. Climate Normals, 1991–2020
St. Onge stands out in South Dakota and nationally: a smaller share of its adults have been diagnosed with depression
CDC measures, 26 in all: St. Onge beats South Dakota on 3 and trails on 2. In St. Onge, 32% of adults have obesity. Only 2 of the 36 South Dakota towns we compare have a lower share of adults who report frequent mental distress than St. Onge.
| St. Onge | South Dakota towns | U.S. towns | |
|---|---|---|---|
| Frequent mental distress (CDC PLACES) | 13% | 15% | 17% |
| Depression (CDC PLACES) | 19% | 22% | 23% |
| Binge drink (CDC PLACES) | 19% | 19% | 16% |
| Obesity (CDC PLACES) | 32% | 35% | 35% |
| What stands out | St. Onge | SD |
|---|---|---|
| Fewer older adults who have lost all their teeth | 7.4% | 12.7% |
| Fewer adults in frequent mental distress | 12.5% | 15.3% |
| More adults who have had cancer | 11.3% | 9.2% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
Terry Peak Ski Area and 4 more within 40 miles
Museums, parks, gardens and other places to visit around St. Onge. Close and well known come first.
40 mi Stadium & arenaRushmore Plaza Civic Center
40 mi MuseumDinosaur Park17 mi Ski areaDeer Mountain Village52 runs · 615 ft vertical12 mi MuseumAdams Museum & HousePhoto credits
Rushmore Plaza Civic Center: Mr. Satterly, WTFPL · Dinosaur Park: Minnesota Jones at en.wikipedia, Public domain
Everything we know about St. Onge
Colleges nearby
1 within 15 miles of the center of St. Onge
About 0 of every 100 St. Onge residents are enrolled in college, against 5 across South Dakota.
99% of working residents leave St. Onge for work
Where St. Onge’s working residents go each day. Line width shows the share.
Census LEHD 2023
About St. Onge
Census-designated place in South Dakota, United States
Saint Onge (pronounced "saynt AHNJ'") is an unincorporated community and census-designated place (CDP) in Lawrence County, South Dakota, United States. As of the 2020 census, the population was 170.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
- Area
- 1.3 sq mi
- Elevation
- 3,432 ft
- ZIP code
- 57779
Questions about St. Onge
Short answers, built from the data on this page.
Is St. Onge, SD a good place to live?
St. Onge has fewer than 1,000 residents, too few for fair grades; the figures below are still real.