Jaffrey is a town in Cheshire County, New Hampshire, United States. The population was 5,457 at the 2010 census.
According to the United States Census Bureau, the town has a total area of 40.0 square miles (104 km), of which 38.3 sq mi (99 km) is land and 1.7 sq mi (4.4 km) is water, comprising 4.32% of the town. Jaffrey village is in the eastern part of the town, and the smaller village of Jaffrey Center is near the town center.
Thorndike Pond is in the north, and Contoocook Lake is on the southern boundary. Mount Monadnock, elevation 3,165 feet (965 m) above sea level and the highest point in Jaffrey, is in the northwest. Jaffrey lies mostly within the Merrimack River watershed, via the Contoocook River in the eastern part of the town, with the northwest corner of town lying in the Ashuelot River watershed, part of the larger Connecticut River watershed.
As of the census of 2010, there were 5,457 people, 2,234 households, and 1,451 families residing in the town. There were 2,547 housing units, of which 313, or 12.3%, were vacant. 160 of the vacant units were for seasonal or recreational use. The racial makeup of the town was 96.2% white, 0.4% African American, 0.2% Native American, 1.2% Asian, 0.04% Native Hawaiian or Pacific Islander, 0.3% some other race, and 1.7% from two or more races. 1.6% of the population were Hispanic or Latino of any race.
Of the 2,234 households, 30.9% had children under the age of 18 living with them, 48.4% were headed by married couples living together, 11.1% had a female householder with no husband present, and 35.0% were non-families. 28.6% of all households were made up of individuals, and 10.5% were someone living alone who was 65 years of age or older. The average household size was 2.41, and the average family size was 2.95.
In the town, 24.0% of the population were under the age of 18, 7.8% were from 18 to 24, 23.2% from 25 to 44, 29.6% from 45 to 64, and 15.3% were 65 years of age or older. The median age was 41.5 years. For every 100 females, there were 93.5 males. For every 100 females age 18 and over, there were 91.4 males.
For the period 2011-2015, the estimated median annual income for a household was $56,618, and the median income for a family was $73,564. Male full-time workers had a median income of $50,138 versus $39,434 for females. The per capita income for the town was $27,689. 15.0% of the population and 6.5% of families were below the poverty line. 28.3% of the population under the age of 18 and 15.9% of those 65 or older were living in poverty.
Jaffrey New Hampshire neighborhoods include: Gilmore Pond, Monadnock, Route 137 to Route 202, Thorndike Pond