West Seneca is a hamlet and census-designated place (CDP) in Erie County, New York, United States. The population was 44,711 at the 2010 census. It is part of the Buffalo-Niagara Falls metropolitan area. The CDP corresponds exactly to the area of the town of West Seneca.

Geography

According to the United States Census Bureau, the CDP has a total area of , of which is land and , or 0.27%, is water.

Demographics

At the 2000 census there were 45,943 people, 18,337 households, and 12,744 families living in the CDP. The population density was . There were 18,993 housing units at an average density of . The racial makeup of the CDP was 98.11% White, 0.46% Black or African American, 0.17% Native American, 0.50% Asian, 0.01% Pacific Islander, 0.19% from other races, and 0.56% from two or more races. Hispanic or Latino of any race were 0.88%.