Granger is a town in Allegany County, New York, United States. The population was 538 at the 2010 census. The town was named after Francis Granger, United States Postmaster General.
According to the United States Census Bureau, the town has a total area of 32.0 square miles (83 km), of which 32.0 square miles (83 km) is land and 0.1 square miles (0.26 km) (0.16%) is water.
The Genesee River forms part of the western border of the town. Rush Creek, an important stream in the town, is a tributary of the Genesee River. The north town line is the border of Livingston County.
As of the census of 2000, there were 577 people, 215 households, and 159 families residing in the town. The population density was 18.0 people per square mile (7.0/km²). There were 357 housing units at an average density of 11.2 per square mile (4.3/km²). The racial makeup of the town was 96.19% White, 0.52% African American, 2.60% Native American, 0.17% from other races, and 0.52% from two or more races.
There were 215 households out of which 30.7% had children under the age of 18 living with them, 62.8% were married couples living together, 6.0% had a female householder with no husband present, and 26.0% were non-families. 22.8% of all households were made up of individuals and 9.3% had someone living alone who was 65 years of age or older. The average household size was 2.68 and the average family size was 3.04.
In the town, the population was spread out with 27.0% under the age of 18, 6.8% from 18 to 24, 27.7% from 25 to 44, 25.8% from 45 to 64, and 12.7% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 112.9 males. For every 100 females age 18 and over, there were 117.0 males.
The median income for a household in the town was $25,875, and the median income for a family was $28,056. Males had a median income of $24,083 versus $18,250 for females. The per capita income for the town was $12,084. About 25.3% of families and 31.2% of the population were below the poverty line, including 51.1% of those under age 18 and 10.1% of those age 65 or over.