Blue Hill is a census-designated place (CDP) in the town of Blue Hill in Hancock County, Maine, United States.

The CDP is located at the geographic center of the town, surrounding the head of Blue Hill Harbor, an arm of Blue Hill Bay.

The 935-foot (285 m) summit of Blue Hill is just outside the CDP to the north.

[3] Ellsworth is 14 miles (23 km) northeast of Blue Hill via Route 172, Bucksport is 17 miles (27 km) to the northwest via Route 15, and the village of Deer Isle is 18 miles (29 km) south via Route 15.

According to the United States Census Bureau, the CDP has a total area of 4.7 square miles (12.2 km2), of which 0.01 square miles (0.02 km2), or 0.19%, are water.