Redfield is a town in Oswego County, New York, USA. The population was 550 at the 2010 census.
The north town line is the border of Jefferson County, New York and the east town line is the border of Lewis County, New York.
According to the United States Census Bureau, the town has a total area of 93.4 square miles (242 km), of which, 90.1 square miles (233 km) of it is land and 3.4 square miles (8.8 km) of it (3.60%) is water.
Redfield is on the Tug Hill Plateau of northwestern New York.
As of the census of 2000, there were 607 people, 230 households, and 172 families residing in the town. Population density was 6.7 people per square mile (2.6/km²). There were 537 housing units at an average density of 6.0 per square mile (2.3/km²). The racial makeup of the town was 98.02% White, 0.66% African American, 0.82% from other races, and 0.49% from two or more races. Hispanic or Latino of any race were 1.65% of the population.
There were 230 households out of which 33.9% had children under the age of 18 living with them, 58.7% were married couples living together, 8.7% had a female householder with no husband present, and 25.2% were non-families. 21.3% of all households were made up of individuals and 8.7% had someone living alone who was 65 years of age or older. The average household size was 2.64 and the average family size was 3.06.
In the town, the population was spread out with 26.5% under the age of 18, 6.9% from 18 to 24, 27.2% from 25 to 44, 25.4% from 45 to 64, and 14.0% who were 65 years of age or older. The median age was 39 years. For every 100 females, there were 94.6 males. For every 100 females age 18 and over, there were 94.8 males.
The median income for a household in the town was $33,304, and the median income for a family was $39,792. Males had a median income of $28,750 versus $22,386 for females. The per capita income for the town was $13,277. About 6.9% of families and 12.7% of the population were below the poverty line, including 13.3% of those under age 18 and 11.4% of those age 65 or over.