Jeffersonville is a village in Sullivan County, New York, United States. The population was 359 at the 2010 census. The name is derived indirectly from Thomas Jefferson.
Lake Jefferson is a small lake adjacent to the village.
Jeffersonville is located at 41°46′50″N 74°55′56″W / 41.78056°N 74.93222°W / 41.78056; -74.93222 (41.780417, -74.932281).
According to the United States Census Bureau, the village has a total area of 0.4 square miles (1.0 km), of which, 0.4 square miles (1.0 km) of it is land and 0.04 square miles (0.10 km) of it (6.82%) is water.
As of the census of 2000, there were 420 people, 162 households, and 92 families residing in the village. The population density was 1,028.2 people per square mile (395.5/km²). There were 206 housing units at an average density of 504.3 per square mile (194.0/km²). The racial makeup of the village was 95.95% White, 1.43% African American, 1.67% from other races, and 0.95% from two or more races. Hispanic or Latino of any race were 2.86% of the population.
There were 162 households out of which 25.9% had children under the age of 18 living with them, 46.9% were married couples living together, 6.2% had a female householder with no husband present, and 43.2% were non-families. 37.7% of all households were made up of individuals and 21.6% had someone living alone who was 65 years of age or older. The average household size was 2.25 and the average family size was 3.05.
In the village, the population was spread out with 20.7% under the age of 18, 5.5% from 18 to 24, 21.7% from 25 to 44, 23.1% from 45 to 64, and 29.0% who were 65 years of age or older. The median age was 46 years. For every 100 females, there were 78.0 males. For every 100 females age 18 and over, there were 76.2 males.
The median income for a household in the village was $32,500, and the median income for a family was $48,125. Males had a median income of $34,219 versus $22,232 for females. The per capita income for the village was $17,899. None of the families and 6.7% of the population were living below the poverty line, including no under eighteens and 5.4% of those over 64.
Jeffersonville New York neighborhoods include: Jeffersonville,, Village of Jeffersonville