Northumberland, New York  Northumberland is a town in Saratoga County, New York, United States. The population was 4,603 at the 2000 census. The name comes from a location in Great Britain. The Town of Northumberland is at the county's east border and northeast of Saratoga Springs. The area was first settled around 1765. Previously, it was in the territory of Mohican natives, who had two villages in the town. The town was formed in 1798 from the Town of Saratoga. Parts of its territory were subsequently removed to form the new towns; Hadley (1801), Moreau (1805), and Wilton (1818). The Champlain Canal was formally opened in 1823. The Col. Sidney Berry House was listed on the National Register of Historic Places in 2003. According to the United States Census Bureau, the town has a total area of , of which, of it is land and of it (1.67%) is water. The east town line is the border of Washington County and is marked by the Hudson River. US Route 4 is a north-south highway by the Hudson River at the southeast corner of Northumberland. New York State Route 32 is a north-south highway that intersects New York State Route 50 at Gansevoort. US-4 and NY-32 are conjoined in Northumberland. As of the census of 2000, there were 4,603 people, 1,593 households, and 1,264 families residing in the town. The population density was 142.3 people per square mile (54.9/km²). There were 1,717 housing units at an average density of 53.1 per square mile (20.5/km²). The racial makeup of the town was 98.09% White, 0.54% African American, 0.33% Native American, 0.28% Asian, 0.17% from other races, and 0.59% from two or more races. Hispanic or Latino of any race were 0.93% of the population. There were 1,593 households out of which 44.3% had children under the age of 18 living with them, 67.1% were married couples living together, 7.8% had a female householder with no husband present, and 20.6% were non-families. 14.5% of all households were made up of individuals and 4.9% had someone living alone who was 65 years of age or older.