Coeymans is a town in Albany County, New York, United States. The population was 7,418 at the 2010 census. The town is named after an early settler, who was the patent-holder for the area. The town is in the southeast part of the county, south of Albany, New York.
According to the United States Census Bureau, the town has a total area of 53.1 square miles (137.5 km²), of which, 50.2 square miles (129.9 km²) of it is land and 2.9 square miles (7.6 km²) of it (5.50%) is water.
The south town line is the border of Greene County, and the east town line, marked by the Hudson River, is the border of Rensselaer County.
Interstate 87 and U.S. Route 9W pass through the town.
According to the 2000 U.S. Census, there were 8,151 people, 3,121 households, and 2,184 families residing in the town. The population density was 162.5 people per square mile (62.7/km²). There were 3,404 housing units at an average density of 67.8 per square mile (26.2/km²). The racial makeup of the town was 94.61% White, 2.13% Black or African American, 0.22% Native American, 0.42% Asian, 0.02% Pacific Islander, 0.79% from other races, and 1.80% from two or more races. Hispanic or Latino of any race were 3.24% of the population.
There were 3,121 households out of which 35.8% had children under the age of 18 living with them, 53.2% were married couples living together, 12.6% had a female householder with no husband present, and 30.0% were non-families. 24.6% of all households were made up of individuals and 10.0% had someone living alone who was 65 years of age or older. The average household size was 2.59 and the average family size was 3.09.
In the town, the population was spread out with 27.5% under the age of 18, 7.8% from 18 to 24, 30.4% from 25 to 44, 22.6% from 45 to 64, and 11.7% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 95.4 males. For every 100 females age 18 and over, there were 91.4 males.
The median income for a household in the town was $46,742, and the median income for a family was $57,808. Males had a median income of $41,197 versus $28,038 for females. The per capita income for the town was $21,686. About 5.7% of families and 6.9% of the population were below the poverty line, including 7.9% of those under age 18 and 7.0% of those age 65 or over.