Acworth is a town in Sullivan County, New Hampshire, United States. At the 2010 census, the town had a total population of 891.
According to the United States Census Bureau, the town has a total area of 39.1 square miles (101 km), of which 38.9 sq mi (101 km) is land and 0.2 sq mi (0.52 km) is water, comprising 0.61% of the town. Acworth is drained by the Cold River, and lies fully within the Connecticut River watershed. The highest point in Acworth is Gove Hill, at 1,939 feet (591 m) above sea level.
The town is crossed by one numbered state highway, New Hampshire Route 123A, which follows the Cold River and passes through the village of South Acworth. Although not numbered routes, the state also maintains a handful of other roads in the town, including Cold River Road, Hill Road, and a portion of Charlestown Road.
As of the census of 2000, there were 836 people, 318 households, and 234 families residing in the town. The population density was 21.5 people per square mile (8.3/km²). There were 512 housing units at an average density of 13.2 per square mile (5.1/km²). The racial makeup of the town was 96.77% White, 0.84% African American, 0.84% Native American, 0.24% Asian, and 1.32% from two or more races. Hispanic or Latino of any race were 1.08% of the population.
There were 318 households out of which 30.8% had children under the age of 18 living with them, 60.7% were married couples living together, 6.0% had a female householder with no husband present, and 26.4% were non-families. 19.8% of all households were made up of individuals and 7.5% had someone living alone who was 65 years of age or older. The average household size was 2.63 and the average family size was 3.06.
In the town, the population was spread out with 25.7% under the age of 18, 4.7% from 18 to 24, 24.0% from 25 to 44, 30.4% from 45 to 64, and 15.2% who were 65 years of age or older. The median age was 43 years. For every 100 females, there were 101.4 males. For every 100 females age 18 and over, there were 101.0 males.
The median income for a household in the town was $37,386, and the median income for a family was $41,397. Males had a median income of $29,792 versus $26,912 for females. The per capita income for the town was $18,132. About 10.1% of families and 15.6% of the population were below the poverty line, including 26.6% of those under age 18 and 5.4% of those age 65 or over.