Herricks is a hamlet and census-designated place (CDP) in Nassau County, on Long Island, in New York, United States.

[3] According to the United States Census Bureau, the CDP has a total area of 0.6 square miles (1.6 km2), all land.

[4] Herricks is bordered by Searingtown Road/Shelter Rock Road to the north, Hillside Avenue to the south (and forming the Herricks–Garden City Park border), Herricks Road to the east and Marcus Avenue to the west.

[8][13] Roslyn Estates is located in New York's 3rd congressional district, which as of February 28, 2024 is represented in the United States Congress by Tom Suozzi (D).

[8][14] Like the rest of New York, Herricks is represented in the United States Senate by Charles Schumer (D) and Kirsten Gillibrand (D).

[15] In the 2016 U.S. presidential election, the majority of Herricks voters voted for Hillary Clinton (D).

[8] Herricks is located within the boundaries of (and is thus served by) the Shelter Rock Library District.

[8] Hillside Avenue (New York State Route 25B) forms the hamlet's southern border.

[8] The nearest Long Island Rail Road stations to the hamlet are New Hyde Park on the Main Line and East Williston on the Oyster Bay Branch.

[18] PSEG Long Island provides power to all homes and businesses within Herricks.