Amherst is a town in Hillsborough County in the state of New Hampshire, United States. The population was 11,201 at the 2010 census. Amherst is home to Ponemah Bog Wildlife Sanctuary, Hodgman State Forest, the Joe English Reservation and Baboosic Lake.
According to the United States Census Bureau, the town has a total area of 34.7 square miles (89.9 km), of which 34.2 square miles (88.5 km) is land and 0.54 square miles (1.4 km) is water, comprising 1.51% of the town. Located on the Souhegan River, Amherst is drained by Beaver, Bloody, and Joe English brooks. Amherst’s highest point is on Chestnut Hill at the town’s northern border, where the elevation reaches 865 feet (264 m) above sea level. Amherst lies fully within the Merrimack River watershed.
As of the census of 2010, there were 11,201 people, 4,063 households, and 3,322 families residing in the town. The population density was 327.5 people per square mile (126.5/km²). There were 4,280 housing units at an average density of 125.1 per square mile (48.4/km²). The racial makeup of the town was 95.8% White, 0.5% African American, 0.1% Native American, 1.7% Asian, 0.04% Pacific Islander, 0.4% some other race, and 1.5% from two or more races. Hispanic or Latino of any race were 1.9% of the population.
There were 4,063 households, out of which 37.7% had children under the age of 18 living with them, 72.2% were headed by married couples living together, 6.7% had a female householder with no husband present, and 18.2% were non-families. 14.5% of all households were made up of individuals, and 6.0% were someone living alone who was 65 years of age or older. The average household size was 2.76, and the average family size was 3.06.
In the town, the age distribution of the population was 26.0% under the age of 18, 5.6% from 18 to 24, 19.4% from 25 to 44, 36.5% from 45 to 64, and 12.5% who were 65 years of age or older. The median age was 44.4 years. For every 100 females, there were 97.0 males. For every 100 females age 18 and over, there were 96.5 males.
For the period 2011-2015, the estimated median annual income for a household in the town was $121,349, and the median income for a family was $130,278. Male full-time workers had a median income of $102,869, versus $51,473 for females. The per capita income for the town was $49,190. About 1.8% of families and 2.9% of the population were below the poverty line, including 3.4% of those under age 18 and 2.6% of those age 65 or over.