Andover is a town in Merrimack County, New Hampshire, United States. The population was 2,371 at the 2010 census. Andover includes the villages of Cilleyville, Potter Place, East Andover, and West Andover, in addition to the town center. The town is home to Ragged Mountain State Forest and Proctor Academy, a private coeducational preparatory school.
According to the United States Census Bureau, the town has a total area of 41.4 square miles (107.3 km), of which 40.5 sq mi (105.0 km) is land and 0.89 sq mi (2.3 km) is water, comprising 2.14% of the town. Andover is drained by the Blackwater River. Bradley Lake is in the south. Ragged Mountain, elevation 2,286 feet (697 m) above sea level, is on the northern boundary. The northern slopes of Mount Kearsarge occupy the southernmost part of town and contain the town’s highest point, 2,460 ft (750 m) above sea level. Andover lies fully within the Merrimack River watershed.
Andover includes the villages of East Andover, West Andover, Cilleyville, and Potter Place, named for Richard Potter, an African-American illusionist who lived there in the early 19th century.
As of the census of 2000, there were 2,109 people, 823 households, and 609 families residing in the town. The population density was 52.1 people per square mile (20.1/km²). There were 1,038 housing units at an average density of 25.7 per square mile (9.9/km²). The racial makeup of the town was 98.20% White, 0.38% African American, 0.14% Native American, 0.05% Asian, 0.05% Pacific Islander, 0.05% from other races, and 1.14% from two or more races. Hispanic or Latino of any race were 0.19% of the population.
There were 823 households out of which 33.7% had children under the age of 18 living with them, 61.7% were married couples living together, 7.7% had a female householder with no husband present, and 26.0% were non-families. 20.5% of all households were made up of individuals and 7.4% had someone living alone who was 65 years of age or older. The average household size was 2.55 and the average family size was 2.90.
In the town, the population was spread out with 24.3% under the age of 18, 6.2% from 18 to 24, 28.2% from 25 to 44, 28.6% from 45 to 64, and 12.7% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 100.5 males. For every 100 females age 18 and over, there were 98.8 males.
The median income for a household in the town was $47,093, and the median income for a family was $52,212. Males had a median income of $33,074 versus $25,927 for females. The per capita income for the town was $21,627. About 4.5% of families and 5.7% of the population were below the poverty line, including 7.6% of those under age 18 and 6.3% of those age 65 or over.