Stephentown is a town in Rensselaer County, New York, United States. The population was 2,903 at the 2010 census. The town, which was originally Jericho Hallow in the Massachusetts Bay Colony, was renamed for Stephen Van Rensselaer. The town is in the southeast corner of the county, and has a sign proclaiming it to be the only Stephentown on Earth.
According to the United States Census Bureau, the town has a total area of 58.1 square miles (150 km), of which, 58.0 square miles (150 km) of it is land and 0.1 square miles (0.26 km) of it (0.16%) is water. The south town line is the border with Columbia County, New York, and the east town line is the border of Massachusetts. The western and central portions of the town are part of the Rensselaer Plateau.
As of the census of 2010, there were 2,903 people, 1,141 households, and 838 families residing in the town. The population density was 49.8 people per square mile (19.1/km²). There were 1,339 housing units at an average density of 23.1 per square mile (8.9/km²). The racial makeup of the town was 96.7% White, 0.31% African American, 0.21% Native American, 0.14% Asian, 0.07% Pacific Islander, and 0.77% from two or more races. Hispanic or Latino of any race were 3.11% of the population.
There were 1,141 households out of which 35.5% had children under the age of 18 living with them, 59.5% were married couples living together, 8.2% had a female householder with no husband present, and 27.2% were non-families. 21.0% of all households were made up of individuals and 7.2% had someone living alone who was 65 years of age or older. The average household size was 2.54 and the average family size was 2.94.
In the town, the population was spread out with 25.7% under the age of 18, 6.8% from 18 to 24, 31.1% from 25 to 44, 26.1% from 45 to 64, and 10.4% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 96.0 males. For every 100 females age 18 and over, there were 99.3 males.
The median income for a household in the town was $59,769, and the median income for a family was $61,347. Males had a median income of $31,535 versus $26,611 for females. The per capita income for the town was $25,352. About 5.7% of families and 6.6% of the population were below the poverty line, including 9.0% of those under age 18 and 7.0% of those age 65 or over.