Casco is a town in Cumberland County, Maine, United States.

Casco is included in the Lewiston-Auburn, Maine metropolitan New England city and town area.

[3] On January 30, 1767, Raymondtown Plantation was granted by the Massachusetts General Court to Capt.

It replaced a 1735 grant called Beverly-Canada (now Weare, New Hampshire) which was ruled invalid in 1741 because of a prior claim by the heirs of John Mason.

The town of Naples was created with land taken in 1838, the same year the western half of Raymond petitioned the legislature to be set off as a township because of its geographical separation behind Rattlesnake Mountain.

[4] Farmers found the surface of the town uneven, its hard and rocky soil "tolerably productive."

Outlets of ponds, however, provided Casco with good sites for water powered mills.

In 1832, the Cumberland and Oxford Canal made Sebago Lake a direct trade route to Portland.

It is bordered by the town of Raymond to the southeast, Naples and Otisfield to the northwest, and Poland to the northeast.

The village of Casco, a census-designated place, is located along Route 121 near the northern corner of town.

South Casco is located along US 302 between Sebago Lake and Thomas Pond in the southeast corner of the town, and Cook Mills is located along Route 11 near the western border of the town.