Saco
- County:
- Phillips County
- County Seat:
- No
- Area (mi²):
- 0.304
- State:
- Montana
Saco is a town located in Phillips County, Montana. Saco has a 2026 population of 161. Saco is currently declining at a rate of -1.23% annually and its population has decreased by -0.62% since the most recent census, which recorded a population of 162 in 2020.