Falmouth is a town in Cumberland County, Maine, United States. The population was 11,185 at the 2010 census. It is part of the Portland–South Portland–Biddeford, Maine metropolitan statistical area.
According to the United States Census Bureau, the town has a total area of 36.34 square miles (94.12 km), of which, 29.38 square miles (76.09 km) of it is land and 6.96 square miles (18.03 km) is water. Located beside Casco Bay, the Gulf of Maine and Atlantic Ocean, Falmouth is drained by the Presumpscot River.
The town is crossed by Interstate 95 and 295, U. S. Route 1 and state routes 9, 26, 88 and 100. It borders the towns of Cumberland to the northeast, Westbrook and Portland to the southwest, and Windham to the northwest. There are two census-designated places occupying the eastern portion of the town: Falmouth CDP to the south, and Falmouth Foreside to the north.
As of 2000 the median income for a household in the town was $66,855, and the median income for a family was $87,304. Males had a median income of $54,545 versus $35,258 for females. The per capita income for the town was $36,716. About 1.8% of families and 3.7% of the population were below the poverty line, including 3.2% of those under age 18 and 4.7% of those age 65 or over.
As of the census of 2010, there were 11,185 people, 4,334 households, and 3,063 families residing in the town. The population density was 380.7 inhabitants per square mile (147.0/km). There were 4,751 housing units at an average density of 161.7 per square mile (62.4/km). The racial makeup of the town was 95.4% White, 0.5% African American, 0.2% Native American, 2.3% Asian, 0.4% from other races, and 1.2% from two or more races. Hispanic or Latino of any race were 1.3% of the population.
There were 4,334 households of which 36.5% had children under the age of 18 living with them, 60.9% were married couples living together, 6.7% had a female householder with no husband present, 3.1% had a male householder with no wife present, and 29.3% were non-families. 24.0% of all households were made up of individuals and 12.8% had someone living alone who was 65 years of age or older. The average household size was 2.54 and the average family size was 3.05.
The median age in the town was 45.3 years. 25.9% of residents were under the age of 18; 4.3% were between the ages of 18 and 24; 19.2% were from 25 to 44; 33.6% were from 45 to 64; and 16.8% were 65 years of age or older. The gender makeup of the town was 47.9% male and 52.1% female.