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St. Onge, SD
Census-designated place in Lawrence County, South Dakota.
Population
40
Land area
1.3sq mi
People per sq mi
30
ZIP codes
0
St. Onge and its ZIP codes
St. Onge at a glance
- St. Onge is about 2.5 times as dense as South Dakota as a whole.
Local data for St. Onge, SD
Counts from official public data
Economy and federal money
Jobs, pay, income and spending are for Lawrence County. PPP loans are for St. Onge.
Unemployment rate
1.9%
Aug 2026, -0.3 pts in a year
Average annual pay
$50,959
13,691 jobs, 2025
Income per person
$78,616
BEA, 2024
Federal spending
$299M
FY 2026, $11,614 per person
Environment and hazard risk
St. Onge, SD, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: wildfire
Storm events since 1996
1,203
Countywide, mostly hail
Flood insurance policies
78
0.6% of homes, county
July high / Jan low
84° / 16°F
21.4 inches of rain a year
Hazards, floods and storm historyCheck a flood zone4 historic places
Health statistics
Share of adults in St. Onge, SD, CDC PLACES estimates
Obesity
32.3%
U.S. 33.3% -1.0 pts
Diabetes
11.2%
U.S. 12.1% -0.9 pts
Smoking
13.2%
U.S. 12.8% about the same
Uninsured (18-64)
7.3%
U.S. 11.1% -3.8 pts
Cities near St. Onge
| Name | Distance | Land area (sq mi) |
|---|---|---|
| WhitewoodCity | 7 mi | 0.7 |
| SpearfishCity | 7.3 mi | 17.3 |
| Crook CityCensus-designated place | 8.3 mi | 0.9 |
| FruitdaleTown | 8.4 mi | 0.3 |
| Mountain PlainsCensus-designated place | 9 mi | 1.6 |
| Belle FourcheCity | 9.8 mi | 9 |
| North SpearfishCensus-designated place | 10 mi | 4.3 |
| DeadwoodCity | 11 mi | 4.9 |
| Boulder CanyonCensus-designated place | 12 mi | 3.1 |
| NislandTown | 12 mi | 0.3 |
| Central CityCity | 13 mi | 0.2 |
| LeadCity | 14 mi | 2.1 |
| SturgisCity | 14 mi | 6.6 |
| ValeCensus-designated place | 17 mi | 1.5 |
| Beulah, WYCensus-designated place | 18 mi | 0.6 |
| Blucksberg MountainCensus-designated place | 18 mi | 0.7 |
Frequently asked questions
- What county is St. Onge, SD in?
- St. Onge is in Lawrence County, South Dakota.
- What is the population of St. Onge, SD?
- About 40 people live in St. Onge, based on American Community Survey 5-year estimates.
- What cities are near St. Onge?
- Nearby places include Whitewood (7 mi), Spearfish (7.3 mi), Crook City (8.3 mi), Fruitdale (8.4 mi), Mountain Plains (9 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023