Fairmount is a hamlet (and census-designated place) in Onondaga County, New York, United States.

Fairmount is a western suburb of Syracuse, located in the far southeastern corner of the town of Camillus.

The name originates from 1798 when engineer and politician James Geddes built his estate, called "Fair Mount" at the intersection of Genesee Road (now West Genesee Street) and Onondaga Road.

The Brockway Tavern building, located on the northwest corner of West Genesee and Onondaga, formerly housed a tavern, motor inn, restaurants and later a funeral home, and now houses a credit union.

A large area of undeveloped land, formerly used for quarrying and a munitions factory in the 19th and early 20th centuries, borders Fairmount to the south at Split Rock.

The Geddes family's "Fair Mount" mansion was demolished in 1929, although a carriage house from the estate survived until 2014.

[3] According to the United States Census Bureau, the CDP has a total area of 3.4 square miles (8.8 km2), all land.

25.5% of all households were made up of individuals, and 14.1% had someone living alone who was 65 years of age or older.