Franklin Square is a hamlet and census-designated place (CDP) in the Town of Hempstead in Nassau County, on Long Island, New York, United States.

What is now Franklin Square was near the center of the Hempstead Plains, and used as grazing land, and later farmland, by the first white settlers.

[3] In late 1643, Robert Fordham and John Carman made a treaty with members of the Massapequak, Mericoke, Matinecock and Rockaway tribes to buy roughly 100 square miles upon which they intended to start a new settlement.

[3] In 1852, one Louis Schroeher built a hotel near a tollgate (by what is now Arden Boulevard) of the Hempstead-Jamaica Turnpike (toll road).

The hotel attracted an increasing number of visitors and immigrants (the latter often German) from New York City to the formerly rural hamlet.

[3] Population grew steadily until the sudden intensified surge of suburbanization into post-World War II Long Island reached the community.

By 1952, the farms were all gone, replaced by newly-built houses full of emigrants from nearby New York City.

[4] However, the plans were scrapped that April when the Town of Hempstead denied the petition, due to the fact that too few residents were in favor of incorporation.

[4] According to the United States Census Bureau, the CDP has a total area of 2.9 square miles (7.5 km2), all land.

[5] Franklin Square is bordered on the north by Stewart Manor, northeast by Garden City and Garden City South, southwest by North Valley Stream, east by West Hempstead, and west by Elmont.

On October 8, 1974, the Franklin National Bank was declared insolvent due to mismanagement and fraud, involving losses in foreign currency speculation and poor loan policies.

This caused massive losses for its stockholders, resulted in jail and disgrace for its management; Italian financier and CEO Michele Sindona was poisoned in his cell in 1986,[13] while serving a life-sentence for his part in this affair.

The Community League of Garden City South, Inc. Is the first New York State Incorporated Civic of Long Island, established in 1929.

The Community League of Garden City South, Inc. Is a direct liaison between the residents/merchants and the State and Local Governments as well as other Organizations.

[6][23][24] The Averill Boulevard Park features a playground, a swimming pool, walking paths & nature trails, and sports facilities.

[24] Rath Park includes a swimming pool, a playground, football & baseball fields, and basketball, handball, & tennis courts.