Gray is a town in Cumberland County, Maine, United States. The population was 8,269 at the 2020 census. It is part of the Portland-South Portland-Biddeford metropolitan area. and included in the Lewiston-Auburn, Maine metropolitan New England city and town area. Gray is located at the intersection of state Routes 4, 26, 100, 115, 202 and th…Gray is a town in Cumberland County, Maine, United States. The population was 8,269 at the 2020 census. It is part of the Portland-South Portland-Biddeford metropolitan area. and included in the Lewiston-Auburn, Maine metropolitan New England city and town area. Gray is located at the intersection of state Routes 4, 26, 100, 115, 202 and the Maine Turnpike exit 63 midway between the state's two largest cities, Portland and Lewiston. The town includes frontage on Little Sebago Lake, Crystal Lake, and Forest Lake.