
St. Onge
- County:
- Lawrence County
- County Seat:
- No
- Area (mi²):
- 1.345
- State:
- South Dakota
St. Onge is a CDP located in Lawrence County, South Dakota. St. Onge has a 2025 population of 14. St. Onge is currently growing at a rate of 7.69% annually but its population has decreased by -44% since the most recent census, which recorded a population of 25 in 2020.
The average household income in St. Onge is -$1000.00 Mn with a poverty rate of 0%. The median age in St. Onge is 0 years: 0 years for males, and 0 years for females.