Dayton is a town in York County, Maine, United States. The population was 1,965 at the 2010 census. It is part of the Portland–South Portland–Biddeford, Maine metropolitan statistical area. Dayton is one of the smallest towns in York County.
According to the United States Census Bureau, the town has a total area of 18.40 square miles (47.66 km), of which, 17.89 square miles (46.33 km) of it is land and 0.51 square miles (1.32 km) is water. Dayton is drained by the Saco River.
Maine-State routes 5 and 35 intersect through Dayton. The town borders Lyman, Hollis, and Buxton, as well as the cities of Saco and Biddeford.
As of the census of 2010, there were 1,965 people, 712 households, and 547 families residing in the town. The population density was 109.8 inhabitants per square mile (42.4/km). There were 753 housing units at an average density of 42.1 per square mile (16.3/km). The racial makeup of the town was 97.6% White, 0.8% African American, 0.5% Native American, 0.1% Asian, 0.1% from other races, and 0.9% from two or more races. Hispanic or Latino of any race were 0.8% of the population.
There were 712 households of which 40.0% had children under the age of 18 living with them, 64.9% were married couples living together, 9.4% had a female householder with no husband present, 2.5% had a male householder with no wife present, and 23.2% were non-families. 15.9% of all households were made up of individuals and 4.6% had someone living alone who was 65 years of age or older. The average household size was 2.76 and the average family size was 3.11.
The median age in the town was 40.5 years. 25.7% of residents were under the age of 18; 5.5% were between the ages of 18 and 24; 27.7% were from 25 to 44; 31.8% were from 45 to 64; and 9.3% were 65 years of age or older. The gender makeup of the town was 51.6% male and 48.4% female.
As of the census of 2000, there were 1,805 people, 638 households, and 509 families residing in the town. The population density was 100.9 people per square mile (39.0/km²). There were 663 housing units at an average density of 37.1 per square mile (14.3/km²). The racial makeup of the town was 98.50% White, 0.17% Native American, 0.28% Asian, 0.22% from other races, and 0.83% from two or more races. Hispanic or Latino of any race were 0.39% of the population.
There were 638 households out of which 44.4% had children under the age of 18 living with them, 69.6% were married couples living together, 6.1% had a female householder with no husband present, and 20.1% were non-families. 14.7% of all households were made up of individuals and 5.2% had someone living alone who was 65 years of age or older. The average household size was 2.83 and the average family size was 3.13.
In the town, the population was spread out with 29.5% under the age of 18, 4.1% from 18 to 24, 37.1% from 25 to 44, 21.4% from 45 to 64, and 7.8% who were 65 years of age or older. The median age was 35 years. For every 100 females, there were 104.6 males. For every 100 females age 18 and over, there were 95.1 males.
The median income for a household in the town was $53,056, and the median income for a family was $57,692. Males had a median income of $38,150 versus $25,956 for females. The per capita income for the town was $20,629. About 2.9% of families and 3.5% of the population were below the poverty line, including 4.5% of those under age 18 and 8.1% of those age 65 or over.