Sandy Creek is a town in Oswego County, New York, United States. The population was 3,939 at the 2010 census. The name is derived from a creek in the area.
According to the United States Census Bureau, the town has a total area of 46.5 square miles (120.5 km²), of which, 42.3 square miles (109.5 km²) of it is land and 4.3 square miles (11.1 km²) of it (9.17%) is water.
The west border of Sandy Creek is Lake Ontario and the north border is Jefferson County.
Interstate 81 and U.S. Route 11 pass through the town (north-south). New York State Route 3 runs north to south near the Lake Ontario shoreline.
As of the census of 2000, there were 3,863 people, 1,543 households, and 1,064 families residing in the town. The population density was 91.4 people per square mile (35.3/km²). There were 2,607 housing units at an average density of 61.7 per square mile (23.8/km²). The racial makeup of the town was 98.27% White, 0.10% Black or African American, 0.36% Native American, 0.10% Asian, 0.18% from other races, and 0.98% from two or more races. Hispanic or Latino of any race were 0.47% of the population.
There were 1,543 households out of which 31.0% had children under the age of 18 living with them, 54.1% were married couples living together, 9.4% had a female householder with no husband present, and 31.0% were non-families. 25.0% of all households were made up of individuals and 10.2% 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 2.97.
In the town, the population was spread out with 26.0% under the age of 18, 6.8% from 18 to 24, 28.7% from 25 to 44, 26.0% from 45 to 64, and 12.5% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 100.4 males. For every 100 females age 18 and over, there were 98.7 males.
The median income for a household in the town was $33,438, and the median income for a family was $41,089. Males had a median income of $36,205 versus $22,031 for females. The per capita income for the town was $17,228. About 11.9% of families and 16.7% of the population were below the poverty line, including 23.9% of those under age 18 and 12.6% of those age 65 or over.