Long Lake is a town in Hamilton County, New York, in the United States. The population was 711 at the 2010 census.
Long Lake is located in northern Hamilton County at 43°58′18″N 074°35′10″W / 43.97167°N 74.58611°W / 43.97167; -74.58611 (43.9717408, -74.5862453) and its elevation is 1,906 feet (581 m). It is bordered to the west by Herkimer County, to the north by St. Lawrence and Franklin counties, and to the east by Essex County.
According to the 2010 United States Census, the town has a total area of 449.837 square miles (1,165.07 km), of which 407.033 square miles (1,054.21 km) is land and 42.804 square miles (110.86 km) is water.
The town is in the Adirondack Park. It is the second-largest town in land area in New York (after Webb in Herkimer County). The town of Long Lake extends about 25 miles (40 km) east to west and up to 12 miles (19 km) north to south. The town extends across the northern part of the county.
New York State Route 30, a north-south highway, intersects New York State Route 28N at Long Lake village. NY-28N and NY-30 run conjoined through part of Long Lake. New York State Route 28 is an east-west highway in the southwest part of the town.
The body of water known as Long Lake is about 14 miles (23 km) long and up to 1-mile (1.6 km) wide. The lake extends from southwest to northeast and is part of the Raquette River system. The Raquette flows into Long Lake at the southwest end and out the northeast end, ultimately flowing to the Saint Lawrence River.
As of the census of 2000, there were 852 people, 387 households, and 236 families residing in the town. The population density was 2.1 people per square mile (0.8/km²). There were 1,496 housing units at an average density of 3.7 per square mile (1.4/km²). The racial makeup of the town was 97.42% White, 0.59% African American, 0.35% Native American, 0.23% Asian, 0.12% Pacific Islander, 0.23% from other races, and 1.06% from two or more races. Hispanic or Latino of any race were 1.06% of the population.
There were 387 households out of which 21.7% had children under the age of 18 living with them, 52.2% were married couples living together, 6.2% had a female householder with no husband present, and 38.8% were non-families. 31.5% of all households were made up of individuals and 14.7% had someone living alone who was 65 years of age or older. The average household size was 2.14 and the average family size was 2.68.
In the town, the age distribution of the population shows 18.4% under the age of 18, 4.2% from 18 to 24, 22.3% from 25 to 44, 35.3% from 45 to 64, and 19.7% who were 65 years of age or older. The median age was 47 years. For every 100 females, there were 100.9 males. For every 100 females age 18 and over, there were 104.4 males.
The median income for a household in the town was $29,583, and the median income for a family was $44,583. Males had a median income of $29,141 versus $21,429 for females. The per capita income for the town was $19,466. About 9.9% of families and 15.6% of the population were below the poverty line, including 17.7% of those under age 18 and 13.2% of those age 65 or over.