Delanson is a village in Schenectady County, New York, United States. The population was 377 at the 2010 census. Delanson is in the southeast portion of the town of Duanesburg.
Delanson is located at 42°44′55″N 74°11′7″W / 42.74861°N 74.18528°W / 42.74861; -74.18528 (42.748640, -74.185222).
According to the United States Census Bureau, the village has a total area of 0.6 square miles (1.6 km), all of it land.
As of the census of 2000, there were 385 people, 151 households, and 109 families residing in the village. The population density was 616.7 people per square mile (239.8/km²). There were 156 housing units at an average density of 249.9 per square mile (97.1/km²). The racial makeup of the village was 95.06% White, 1.30% African American, 1.56% Native American, 0.26% from other races, and 1.82% from two or more races. Hispanic or Latino of any race were 0.26% of the population.
There were 151 households out of which 33.1% had children under the age of 18 living with them, 58.9% were married couples living together, 6.6% had a female householder with no husband present, and 27.8% were non-families. 21.2% of all households were made up of individuals and 7.9% 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 2.99.
In the village, the population was spread out with 24.9% under the age of 18, 7.0% from 18 to 24, 30.6% from 25 to 44, 25.7% from 45 to 64, and 11.7% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 96.4 males. For every 100 females age 18 and over, there were 99.3 males.
The median income for a household in the village was $58,036, and the median income for a family was $60,000. Males had a median income of $38,889 versus $30,000 for females. The per capita income for the village was $24,114. None of the families and 0.5% of the population were living below the poverty line, including no under eighteens and 4.1% of those over 64.