Orange is a town in Grafton County, New Hampshire, United States. The population was 331 at the 2010 census.
According to the United States Census Bureau, the town has a total area of 23.2 square miles (60 km), of which 23.2 sq mi (60 km) is land and 0.04 sq mi (0.10 km) is water, comprising 0.17% of the town. The highest point in Orange is the summit of Mount Cardigan, at 3,155 feet (962 m) above sea level.
As of the census of 2000, there were 299 people, 111 households, and 85 families residing in the town. The population density was 12.9 people per square mile (5.0/km²). There were 134 housing units at an average density of 5.8 per square mile (2.2/km²). The racial makeup of the town was 99.67% White and 0.33% Asian. Hispanic or Latino of any race were 0.33% of the population.
There were 111 households out of which 33.3% had children under the age of 18 living with them, 59.5% were married couples living together, 8.1% had a female householder with no husband present, and 23.4% were non-families. 15.3% of all households were made up of individuals and 4.5% had someone living alone who was 65 years of age or older. The average household size was 2.69 and the average family size was 2.98.
In the town, the population was spread out with 25.1% under the age of 18, 5.0% from 18 to 24, 35.5% from 25 to 44, 25.1% from 45 to 64, and 9.4% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 110.6 males. For every 100 females age 18 and over, there were 103.6 males.
The median income for a household in the town was $41,250, and the median income for a family was $40,625. Males had a median income of $34,750 versus $25,938 for females. The per capita income for the town was $17,456. About 6.3% of families and 6.6% of the population were below the poverty line, including 6.0% of those under the age of eighteen and 3.2% of those sixty five or over.
As of May 31, 2016, there were 225 registered voters on the checklist, including 55 Republican, 53 Democrat and 117 undeclared.