
St. Ignatius
- County:
- Lake County
- County Seat:
- No
- Area (mi²):
- 0.533
- State:
- Montana
St. Ignatius is a town located in Lake County, Montana. St. Ignatius has a 2025 population of 850. St. Ignatius is currently growing at a rate of 1.8% annually and its population has increased by 9.68% since the most recent census, which recorded a population of 775 in 2020.
The average household income in St. Ignatius is $54,560 with a poverty rate of 16.28%. The median age in St. Ignatius is 28.9 years: 23.4 years for males, and 32.8 years for females.