Hanover is a town in Chautauqua County, New York, United States. The population was 7,127 at the 2010 census. The town lies in the northeast corner of Chautauqua County.
According to the United States Census Bureau, the town has a total area of 49.5 square miles (128.1 km), of which 49.2 square miles (127.4 km) is land and 0.27 square miles (0.7 km), or 0.57%, is water.
The New York State Thruway (Interstate 90), US 20 and NY 5 pass through the north part of the town. New York State Route 39 crosses the center of the town.
As of the census of 2000, there were 7,638 people, 2,975 households, and 2,040 families residing in the town. The population density was 154.9 people per square mile (59.8/km²). There were 3,501 housing units at an average density of 71.0 per square mile (27.4/km²). The racial makeup of the town was 96.82% White, 0.48% African American, 0.90% Native American, 0.12% Asian, 0.05% Pacific Islander, 0.76% from other races, and 0.86% from two or more races. Hispanic or Latino of any race were 1.70% of the population.
There were 2,975 households out of which 31.8% had children under the age of 18 living with them, 53.8% were married couples living together, 10.7% had a female householder with no husband present, and 31.4% were non-families. 26.1% of all households were made up of individuals and 11.9% had someone living alone who was 65 years of age or older. The average household size was 2.50 and the average family size was 2.99.
In the town, the population was spread out with 25.4% under the age of 18, 6.2% from 18 to 24, 27.6% from 25 to 44, 24.3% from 45 to 64, and 16.4% who were 65 years of age or older. The median age was 39 years. For every 100 females, there were 95.2 males. For every 100 females age 18 and over, there were 91.2 males.
The median income for a household in the town was $37,567, and the median income for a family was $44,057. Males had a median income of $38,034 versus $22,754 for females. The per capita income for the town was $17,654. About 6.3% of families and 10.6% of the population were below the poverty line, including 16.3% of those under age 18 and 5.8% of those age 65 or over.