Saco (pronounced
SOCK-oh) is a city in
York County,
Maine,
United States. The population was 18,482 at the
2010 census. It is home to Ferry Beach State Park,
Funtown Splashtown USA,
Thornton Academy, as well as
General Dynamics Armament Systems (also known by its former name, Saco Defense), a subsidiary of the defense contractor
General Dynamics. Saco sees much tourism during summer months, due to its amusement parks, Ferry Beach State Park, and proximity to Old Orchard Beach.