Stillwater is a town in Saratoga County, New York, United States, with an estimated population of 8,547 in 2016. The town contains a village called Stillwater. The town is at the eastern border of the county, southeast of Saratoga Springs and borders both Rensselaer and Washington counties. Saratoga National Historical Park is located within the town’s limits. There is a hamlet in Minerva, Essex County, New York with the same name which has nothing to do with this town.
According to the United States Census Bureau, the town has a total area of 43.6 square miles (112.8 km²), of which, 41.4 square miles (107.1 km²) is land and 2.2 square miles (5.7 km²) (5.07%) is water.
The east town line is the border of Rensselaer County and Washington County, marked by the Hudson River.
US Route 4, partly conjoined with New York State Route 32 follows the Hudson River through the town. New York State Route 423 is an east-west highway in the northern part of Stillwater. New York State Route 9P is a north-south highway in the northwestern part of the town by Saratoga Lake. New York State Route 67 runs along the south town line.
At the 2000 census, there were 7,522 people, 2,786 households and 2,109 families residing in the town. The population density was 181.9 per square mile (70.2/km²). There were 3,054 housing units at an average density of 73.8 per square mile (28.5/km²). The racial makeup of the town was 98.21% White, 0.41% Black or African American, 0.11% Native American, 0.47% Asian, 0.01% Pacific Islander, 0.11% from other races, and 0.69% from two or more races. Hispanic or Latino of any race were 0.62% of the population.
There were 2,786 households of which 38.0% had children under the age of 18 living with them, 60.7% were married couples living together, 10.0% had a female householder with no husband present, and 24.3% were non-families. 19.5% of all households were made up of individuals and 7.7% had someone living alone who was 65 years of age or older. The average household size was 2.70 and the average family size was 3.10.
27.0% of the population were under the age of 18, 6.9% from 18 to 24, 31.9% from 25 to 44, 23.5% from 45 to 64, and 10.7% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 99.8 males. For every 100 females age 18 and over, there were 96.8 males.
The median household income was $47,579 and the median family income was $53,023. Males had a median income of $37,428 and females $27,257. The per capita income was $19,291. About 5.3% of families and 6.7% of the population were below the poverty line, including 8.6% of those under age 18 and 11.3% of those age 65 or over.