Stark is a town in Herkimer County, New York, United States. The population was 757 at the 2010 census. The town was named after Revolutionary War general John Stark.
According to the United States Census Bureau, the town has a total area of 31.9 square miles (82.5 km), of which 1.61 acres (6,520 m), or 0.01%, are water.
The east town line is the border of Montgomery County, and the south town line is the border of Otsego County.
Otsquago Creek, a tributary of the Mohawk River, flows across the town from southwest to northeast.
As of the census of 2000, there were 767 people, 286 households, and 215 families residing in the town. The population density was 24.3 people per square mile (9.4/km²). There were 334 housing units at an average density of 10.6 per square mile (4.1/km²). The racial makeup of the town was 99.09% White, 0.39% African American, 0.39% Pacific Islander, and 0.13% from two or more races. Hispanic or Latino of any race were 0.26% of the population.
There were 286 households out of which 36.0% had children under the age of 18 living with them, 61.2% were married couples living together, 8.4% had a female householder with no husband present, and 24.8% were non-families. 20.6% of all households were made up of individuals and 11.9% had someone living alone who was 65 years of age or older. The average household size was 2.68 and the average family size was 3.13.
In the town, the population was spread out with 29.2% under the age of 18, 5.5% from 18 to 24, 27.0% from 25 to 44, 23.1% from 45 to 64, and 15.3% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 110.1 males. For every 100 females age 18 and over, there were 106.5 males.
The median income for a household in the town was $31,518, and the median income for a family was $34,545. Males had a median income of $27,813 versus $21,042 for females. The per capita income for the town was $14,128. About 14.1% of families and 19.9% of the population were below the poverty line, including 33.3% of those under age 18 and 10.8% of those age 65 or over.