Hicksville is a hamlet and census-designated place (CDP) located within the Town of Oyster Bay in Nassau County, New York, United States. The population of the CDP was 41,260 at the 2000 census. The area is served by the Hicksville Post Office and the Hicksville School District.
Valentine Hicks, son-in-law of nationally famous abolitionist and Quaker preacher Elias Hicks, and eventual president of the Long Island Railroad bought land in the village in 1834 and turned it into a station stop on the LIRR in 1837. The station became a depot for produce, particularly cucumbers for a Heinz Company plant. After a blight destroyed the cucumber crops, the farmers grew potatoes. It turned into a bustling New York suburb in the building boom following World War II.
Hicksville is located at 40°45′48″N 73°31′24″W / 40.76333°N 73.52333°W / 40.76333; -73.52333 (40.763355, -73.523231).