Barnstead is a town in Belknap County, New Hampshire, United States. The population was 4,593 at the 2010 census. Home to the Suncook Lakes, Barnstead includes the villages of Center Barnstead, Barnstead Parade (identified as “Barnstead” on topographic maps) and South Barnstead.
According to the United States Census Bureau, the town has a total area of 44.0 square miles (114.0 km), of which 42.0 sq mi (108.8 km) is land and 2.0 sq mi (5.2 km) is water, comprising 4.58% of the town. The highest point in Barnstead is 1,190 feet (360 m) above sea level along the town’s northern border, near the community of Locke’s Corner. Drained by the Suncook River, Barnstead lies fully within the Merrimack River watershed.
New Hampshire Route 28 traverses the town from north to south, connecting Alton and Wolfeboro to the north with Pittsfield and Suncook to the south. New Hampshire Route 126 begins in Center Barnstead and travels southeast to Strafford and Barrington. New Hampshire Route 107 cuts through the western corner of Barnstead, leading from Pittsfield in the south to Laconia in the north.
As of the census of 2000, there were 3,886 people, 1,422 households, and 1,096 families residing in the town. The population density was 92.7 people per square mile (35.8/km²). There were 1,994 housing units at an average density of 47.6 per square mile (18.4/km²). The racial makeup of the town was 97.74% White, 0.62% African American, 0.31% Native American, 0.59% Asian, 0.05% from other races, and 0.69% from two or more races. Hispanic or Latino of any race were 0.59% of the population.
There were 1,422 households out of which 34.9% had children under the age of 18 living with them, 66.2% were married couples living together, 6.3% had a female householder with no husband present, and 22.9% were non-families. 17.0% of all households were made up of individuals and 5.3% had someone living alone who was 65 years of age or older. The average household size was 2.73 and the average family size was 3.08.
In the town, the population was spread out with 26.4% under the age of 18, 6.2% from 18 to 24, 29.4% from 25 to 44, 27.1% from 45 to 64, and 10.9% who were 65 years of age or older. The median age was 39 years. For every 100 females, there were 104.0 males. For every 100 females age 18 and over, there were 102.4 males.
The median income for a household in the town was $47,449, and the median income for a family was $49,404. Males had a median income of $34,130 versus $24,904 for females. The per capita income for the town was $19,773. About 2.8% of families and 3.8% of the population were below the poverty line, including 6.4% of those under age 18 and 4.7% of those age 65 or over.