LaGrange (/ləˈɡreɪndʒ/ lə-GRAYNJ) is a town in Dutchess County, New York, United States. The population was 15,730 at the 2010 census. The town was named after the ancestral estate of the wife of the Marquis de Lafayette.
According to the United States Census Bureau, the town has a total area of 40.3 square miles (104.5 km), of which 39.9 square miles (103.3 km) is land and 0.46 square miles (1.2 km), or 1.17%, is water. The town of LaGrange is located within the Hudson Valley region of New York. The towns bordering LaGrange are Union Vale to the east, Beekman to the southeast, East Fishkill and Wappinger to the south, Poughkeepsie to the west, and Pleasant Valley to the north, with a small part of Washington also bordering LaGrange.
As of the census of 2000, there were 14,928 people, 5,085 households, and 4,103 families residing in the town. The population density was 376.0 people per square mile (145.2/km²). There were 5,240 housing units at an average density of 132.0 per square mile (51.0/km²). The racial makeup of the town was 91.98% White, 2.41% African American, 0.12% Native American, 2.94% Asian, 1.14% from other races, and 1.41% from two or more races. Hispanic or Latino of any race were 4.26% of the population.
There were 5,085 households out of which 40.6% had children under the age of 18 living with them, 71.2% were married couples living together, 6.5% had a female householder with no husband present, and 19.3% were non-families. 15.4% of all households were made up of individuals and 5.5% had someone living alone who was 65 years of age or older. The average household size was 2.93 and the average family size was 3.28.
In the town, the population was spread out with 28.5% under the age of 18, 5.9% from 18 to 24, 29.9% from 25 to 44, 25.3% 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 97.5 males. For every 100 females age 18 and over, there were 96.0 males.
The median income for a household in the town was $74,881, and the median income for a family was $80,724. Males had a median income of $61,806 versus $36,955 for females. The per capita income for the town was $27,872. About 1.7% of families and 3.7% of the population were below the poverty line, including 4.2% of those under age 18 and 2.4% of those age 65 or over.