Union Vale is a town in Dutchess County, New York, United States. The population was 4,877 at the 2010 census.
According to the United States Census Bureau, the town of Union Vale has a total area of 37.8 square miles (97.9 km), of which 37.5 square miles (97.1 km) is land and 0.31 square miles (0.8 km), or 0.86%, is water. The highest point is atop Clove Mountain, at 1,400 feet (430 m) above sea level.
New York State Route 55 runs through the southwestern part of the town.
Sky Acres Airport, a general aviation facility, is located in the northwestern part of the town.
As of the census of 2000, there were 4,546 people, 1,359 households, and 1,141 families residing in the town. The population density was 120.6 people per square mile (46.6/km²). There were 1,464 housing units at an average density of 38.8 per square mile (15.0/km²). The racial makeup of the town was 94.24% White, 2.35% African American, 0.11% Native American, 1.19% Asian, 0.04% Pacific Islander, 1.03% from other races, and 1.03% from two or more races. Hispanic or Latino of any race were 3.43% of the population.
There were 1,359 households out of which 47.0% had children under the age of 18 living with them, 75.9% were married couples living together, 5.6% had a female householder with no husband present, and 16.0% were non-families. 12.9% of all households were made up of individuals and 4.9% had someone living alone who was 65 years of age or older. The average household size was 3.10 and the average family size was 3.40.
In the town, the population was spread out with 28.9% under the age of 18, 5.5% from 18 to 24, 30.1% from 25 to 44, 25.6% from 45 to 64, and 9.9% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 100.7 males. For every 100 females age 18 and over, there were 100.3 males.
The median income for a household in the town was $70,500, and the median income for a family was $72,697. Males had a median income of $51,382 versus $29,643 for females. The per capita income for the town was $24,535. About 0.8% of families and 2.9% of the population were below the poverty line, including 1.7% of those under age 18 and none of those age 65 or over.