Parish is a town in Oswego County, New York, United States. The population was 2,558 at the 2010 census.
The Town of Parish was created from the Town of Mexico in 1828. There is a village called Parish in the town.
According to the United States Census Bureau, the town has a total area of 42.0 square miles (109 km2), of which, 41.8 square miles (108 km2) of it is land and 0.2 square miles (0.52 km2) of it (0.45%) is water.
As of the census of 2000, there were 2,694 people, 955 households, and 741 families residing in the town. The population density was 64.5 people per square mile (24.9/km²). There were 1,034 housing units at an average density of 24.8 per square mile (9.6/km²). The racial makeup of the town was 98.63% White, 0.37% Black or African American, 0.37% Native American, 0.07% Asian, 0.04% from other races, and 0.52% from two or more races. Hispanic or Latino of any race were 0.52% of the population.
There were 955 households out of which 39.3% had children under the age of 18 living with them, 61.8% were married couples living together, 9.4% had a female householder with no husband present, and 22.4% were non-families. 17.5% of all households were made up of individuals and 7.3% had someone living alone who was 65 years of age or older. The average household size was 2.82 and the average family size was 3.14.