North Amityville is a hamlet and census-designated place (CDP) in the Town of Babylon in Suffolk County, on the South Shore of Long Island, in New York.

[2] According to the United States Census Bureau, the CDP has a total area of 2.4 square miles (6.1 km2), all land.

North Amityville is served by three public school districts.

[5] The Long Island Rail Road does not have a branch in North Amityville.

Several Suffolk County Transit routes also serve North Amityville.