Saco
- County:
- York County
- County Seat:
- No
- Area (mi²):
- 38.585
- State:
- Maine
Saco is a city located in York County, Maine. Saco has a 2026 population of 21,064. Saco is currently growing at a rate of 0.18% annually and its population has increased by 3.16% since the most recent census, which recorded a population of 20,419 in 2020.