Ballston Spa is a village and the county seat of Saratoga County, New York, United States, located southwest of Saratoga Springs. The population of the village, named after Rev. Eliphalet Ball, a Congregationalist clergyman and an early settler, was 5,409 at the 2010 census. Ballston Spa lies on the border of two towns, situated partly in the Town of Ballston and partly in the Town of Milton.
Ballston Spa is located at 43°0′26″N 73°51′4″W / 43.00722°N 73.85111°W / 43.00722; -73.85111 (43.007185, -73.851168).
According to the United States Census Bureau, the village has a total area of 1.6 square miles (4.1 km), of which, 1.6 square miles (4.1 km) of it is land and 0.62% is water.
New York State Route 50 (Milton Avenue), a north-south highway, passes through the village and intersects New York State Route 67 (West High Street). County Road 63 (Malta Avenue) leaves the village to the east, connecting it to U.S. Route 9 and Interstate 87 (The Northway).
As of the census of 2000, there were 5,556 people, 2,267 households, and 1,385 families residing in the village. The population density was 3,464.8 people per square mile (1,340.7/km²). There were 2,398 housing units at an average density of 1,495.4 per square mile (578.7/km²). The racial makeup of the village was 96.33% White, 1.17% African American, 0.16% Native American, 0.52% Asian, 0.61% from other races, and 1.21% from two or more races. Hispanic or Latino of any race were 1.94% of the population.
There were 2,267 households out of which 32.4% had children under the age of 18 living with them, 45.9% were married couples living together, 10.8% had a female householder with no husband present, and 38.9% were non-families. 32.1% of all households were made up of individuals and 11.6% had someone living alone who was 65 years of age or older. The average household size was 2.32 and the average family size was 2.94.
In the village, the population was spread out with 23.9% under the age of 18, 8.1% from 18 to 24, 32.7% from 25 to 44, 18.7% from 45 to 64, and 16.6% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 88.2 males. For every 100 females age 18 and over, there were 85.2 males.
The median income for a household in the village was $37,173, and the median income for a family was $49,387. Males had a median income of $36,929 versus $27,281 for females. The per capita income for the village was $20,237. About 7.4% of families and 10.6% of the population were below the poverty line, including 16.8% of those under age 18 and 5.1% of those age 65 or over.