Beekmantown is a town in Clinton County, New York, United States. The population was 5,545 at the 2010 census. The town name is that of William Beekman, an original landowner. It is on the east border of the county, just north of Plattsburgh.
According to the United States Census Bureau, the town has a total area of 69.6 square miles (180.3 km), of which 60.4 square miles (156.5 km) is land and 9.2 square miles (23.8 km), or 13.22%, is water.
The east town line runs through the center of the west channel of Lake Champlain and is the state border with Vermont.
The Adirondack Northway (Interstate 87) and U.S. Route 9 are major north-south highways in the eastern part of Beekmantown. Access from I-87 is via Exit 40 halfway between the north and south town borders. New York State Route 22 and New York State Route 190 are north-south highways west of the interstate. New York State Route 456 is an east-west highway.
As of the census of 2000, there were 5,326 people, 2,004 households, and 1,476 families residing in the town. The population density was 88.1 people per square mile (34.0/km²). There were 2,210 housing units at an average density of 36.5 per square mile (14.1/km²). The racial makeup of the town was 97.63% White, 0.71% African American, 0.17% Native American, 0.28% Asian, 0.02% Pacific Islander, 0.24% from other races, and 0.94% from two or more races. Hispanic or Latino of any race were 1.01% of the population.
There were 2,004 households out of which 36.0% had children under the age of 18 living with them, 61.2% were married couples living together, 7.8% had a female householder with no husband present, and 26.3% were non-families. 18.4% of all households were made up of individuals and 5.9% had someone living alone who was 65 years of age or older. The average household size was 2.65 and the average family size was 3.00.
In the town, the population was spread out with 26.3% under the age of 18, 7.8% from 18 to 24, 30.9% from 25 to 44, 25.8% from 45 to 64, and 9.1% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 100.1 males. For every 100 females age 18 and over, there were 99.3 males.
The median income for a household in the town was $42,555, and the median income for a family was $45,915. Males had a median income of $34,716 versus $22,040 for females. The per capita income for the town was $18,792. About 11.0% of families and 12.9% of the population were below the poverty line, including 18.6% of those under age 18 and 5.8% of those age 65 or over.