Milton is a town in Strafford County, New Hampshire, United States. The population was 4,598 at the 2010 census. A manufacturing, resort and residential town, Milton includes the village of Milton Mills. The primary village in town, where 575 people resided at the 2010 census, is defined as the Milton census-designated place (CDP), and is located along New Hampshire Route 125 and the Salmon Falls River, just north of Route 75.
The main village of Milton is in the southern part of the town, along the west side of the Salmon Falls River at the outlet of Milton Pond. The village of Milton Mills is in the northern part of the town, 7 miles (11 km) by road north of Milton village.
The Spaulding Turnpike (New Hampshire Route 16) runs north to south through Milton, with access from Exit 17 (New Hampshire Route 75) in the south, near Milton village, and from Exit 18 (New Hampshire Route 125) in the north, just south of the Wakefield town line.
According to the United States Census Bureau, the town has a total area of 34.4 square miles (89.0 km), of which 33.1 square miles (85.8 km) are land and 1.2 square miles (3.2 km) are water, comprising 3.58% of the town. Milton is drained by the Salmon Falls River. Teneriffe Mountain is the highest point in Milton, with the summit reaching 1,090 feet (330 m) above sea level.
As of the census of 2010, there were 4,598 people, 1,800 households, and 1,283 families residing in the town. There were 2,181 housing units, of which 381, or 17.5%, were vacant. 225 of the vacant units were for seasonal or recreational use. The racial makeup of the town was 97.4% white, 0.5% African American, 0.2% Native American, 0.2% Asian, 0.02% Native Hawaiian or Pacific Islander, 0.2% some other race, and 1.5% from two or more races. 0.9% of the population were Hispanic or Latino of any race.
Of the 1,800 households, 32.7% had children under the age of 18 living with them, 56.3% were headed by married couples living together, 9.6% had a female householder with no husband present, and 28.7% were non-families. 21.3% of all households were made up of individuals, and 5.8% were someone living alone who was 65 years of age or older. The average household size was 2.55, and the average family size was 2.93.
In the town, 22.9% of the population were under the age of 18, 7.3% were from 18 to 24, 25.4% from 25 to 44, 33.0% from 45 to 64, and 11.4% were 65 years of age or older. The median age was 41.3 years. For every 100 females, there were 96.9 males. For every 100 females age 18 and over, there were 96.9 males.
For the period 2011-2015, the estimated median annual income for a household was $60,000, and the median income for a family was $67,991. Male full-time workers had a median income of $55,324 versus $34,832 for females. The per capita income for the town was $33,495. 8.8% of the population and 4.6% of families were below the poverty line. 8.5% of the population under the age of 18 and 3.6% of those 65 or older were living in poverty.