[6] In 1946, developer William J. Levitt bought 19 acres of land near the Carle Place train station for an experiment.

[7] His crews brought pre-cut lumber to the site and rapidly assembled 600 low-cost houses, offering affordable suburban living with an easy commute into offices in New York City.

It transformed Carle Place, and served as the prototype for Levittown, the larger development which Levitt began the following year only a few miles away.

[7] The area was also known as Mineola Park between circa 1895 and 1915, after an unsuccessful real estate development of the same name within the hamlet.

[7] The proposal failed, as the majority of residents preferred keeping the name, and no attempts to change it have taken place since.

[7] Another historic name for the area is Frog Hollow, which is still used colloquially and is the source of the Carle Place Union Free School District's mascot.

[9][10] According to the United States Census Bureau, the CDP has a total area of 0.935 square miles (2.42 km2), all land.

[11] Carle Place also borders the part of Uniondale formerly known as East Garden City, an unincorporated area of the Town of Hempstead.

Carle Place has its own school district, which, though it includes small portions of the villages of Westbury and Mineola, is one of the smallest in New York state.