St. Onge Schoolhouse · National Register of Historic Places
St. Onge’s story
St. Onge in pictures
5 places on the National Register of Historic Places.
Explore the history →St. OngeSD
A town of 347. Home to 5 places on the National Register of Historic Places.
Population
347
residents
Median home value
$286K
Census ACS
Median age
53.3
years
Jobs based here
89
A commuter town
What makes St. Onge stand out
The thing St. Onge does most differently from other towns.
Small town
347 people, and everyone knows the way
In a town this size, neighbors are the best guide. Ask them anything.
Nearby towns
St. Onge’s report card
Now in St. Onge
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The data
Ordered by what stands out in St. Onge. Another town gets a different order.
Work & commute
Most working residents commute out of St. Onge
Most working residents leave St. Onge for work: only 1% work in town. The top destinations are Spearfish (29%), Rapid City (19%) and Sturgis (11%). Half commute less than 12 miles.
1%work in town
Where working residents work
In St. Onge1%
Spearfish29%
Rapid City19%
Sturgis11%
Deadwood6%
12 mi
median commute distance
89
jobs based in St. Onge
A commuter town
jobs vs. working residents
Census LEHD 2023 · ACSCommute map →
Natural hazards
High risk, with inland flooding at the top
Expected storm and flood damage is higher than in 70% of U.S. communities.
70risk score of 100
FEMA risk score
Inland floodingWildfireCold waves
1
federal disasters paid out here
FEMA National Risk Index · OpenFEMANatural hazards →
Climate
Snowy winters, pleasant summers
St. Onge has cold, snowy winters and warm summers, with very little rain. A typical July afternoon reaches 87°, a January night drops to 14°, and about 42 inches of snow falls in a normal winter.
42″snow a winter
Typical low → high °F
Winter15–37°
Spring33–58°
Summer56–83°
Fall35–61°
Sep 30
typical first frost
May 10
typical last frost
+1.1°
vs. the 20th-century average
NOAA U.S. Climate Normals, 1991–2020Full climate →
Health
How healthy St. Onge is
St. Onge beats the South Dakota average on 4 of 26 CDC measures and trails it on 2.
26 measures vs. South Dakota
4 better20 too close to call2 worse
| 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 | 13% | 15.3% |
| More adults who have had cancer | 11.5% | 9.2% |
Monument Health Spearfish Hospital
7 mi away · emergency room
1 of 3
care shortages: mental health
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSAFull health report →
Outdoors
0% of St. Onge is conserved land
4.9 miles of trails across 0 parks and preserves.
0%conserved
0%
conserved · 0 of 22,770 acres
4.9 mi
of trails · 0.1 per sq mi
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-USParks & trails →
A commuter town
99% of working residents leave St. Onge for work
Where St. Onge’s working residents go each day. Line width shows the share.
89jobs based in St. Onge
1%of working residents work in town
12 mimedian commute distance
Census LEHD 2023
Landmarks
5 places in St. Onge on the National Register of Historic Places.
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)
- Population
- 170
- Area
- 1.3 sq mi
- Elevation
- 3,432 ft
- ZIP code
- 57779