Jewett is a town centrally located in Greene County, New York, United States. The population was 953 at the 2010 census. The town is named for Freeborn G. Jewett, justice of the New York Supreme Court.
According to the United States Census Bureau, the town has a total area of 50.5 square miles (131 km), of which 50.3 square miles (130 km) is land and 0.2 square miles (0.52 km), or 0.34%, is water.
The town is in the Catskill Mountains and in the Catskill Park.
As of the census of 2000, there were 970 people, 405 households, and 279 families residing in the town. The population density was 19.3 people per square mile (7.4/km²). There were 1,026 housing units at an average density of 20.4 per square mile (7.9/km²). The racial makeup of the town was 97.73% White, 0.10% African American, 0.93% Asian, 0.31% from other races, and 0.93% from two or more races. Hispanic or Latino of any race were 2.99% of the population.
There were 405 households out of which 25.4% had children under the age of 18 living with them, 59.5% were married couples living together, 5.9% had a female householder with no husband present, and 30.9% were non-families. 25.9% of all households were made up of individuals and 10.4% had someone living alone who was 65 years of age or older. The average household size was 2.40 and the average family size was 2.89.
In the town, the population was spread out with 22.0% under the age of 18, 4.2% from 18 to 24, 25.2% from 25 to 44, 31.0% from 45 to 64, and 17.6% who were 65 years of age or older. The median age was 44 years. For every 100 females, there were 102.1 males. For every 100 females age 18 and over, there were 100.3 males.
The median income for a household in the town was $41,172, and the median income for a family was $46,250. Males had a median income of $35,909 versus $25,000 for females. The per capita income for the town was $22,440. About 8.1% of families and 12.0% of the population were below the poverty line, including 22.2% of those under age 18 and 6.7% of those age 65 or over.