Parma is a town in Monroe County, New York, United States. The population was 15,633 at the 2010 census.
According to the United States Census Bureau, the town has a total area of 42.9 square miles (111 km), of which, 42.0 square miles (109 km) of it is land and 1.0 square mile (2.6 km) of it (2.28%) is water.
The town is bordered on the north by the southern shore of Lake Ontario, on the west by the towns of Hamlin, Clarkson and Sweden, on the south by the town of Ogden and on the east by the town of Greece.
As of the census of 2000, there were 14,822 people, 5,283 households, and 4,030 families residing in the town. The population density was 353.2 people per square mile (136.4/km²). There were 5,502 housing units at an average density of 131.1 per square mile (50.6/km²). The racial makeup of the town was 97.08% White, 1.29% African American, 0.18% Native American, 0.52% Asian, 0.03% Pacific Islander, 0.24% from other races, and 0.67% from two or more races. Hispanic or Latino of any race were 1.12% of the population.
There were 5,283 households out of which 38.7% had children under the age of 18 living with them, 64.1% were married couples living together, 8.4% had a female householder with no husband present, and 23.7% were non-families. 18.9% of all households were made up of individuals and 6.2% had someone living alone who was 65 years of age or older. The average household size was 2.77 and the average family size was 3.20.
In the town, the population was spread out with 28.3% under the age of 18, 6.6% from 18 to 24, 30.2% from 25 to 44, 24.8% from 45 to 64, and 10.0% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 98.8 males. For every 100 females age 18 and over, there were 96.4 males.
The median income for a household in the town was $53,189, and the median income for a family was $60,686. Males had a median income of $42,566 versus $29,381 for females. The per capita income for the town was $22,431. About 2.2% of families and 4.1% of the population were below the poverty line, including 5.6% of those under age 18 and 5.0% of those age 65 or over.