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

The development was built with 88 split-level houses designed by A.H. Salkowitz, and was constructed on one of the last remaining major undeveloped tracts of land available in Manhasset Hills.

[2] In the 1980s and 1990s, roughly 1,000 Manhasset Hills residents attempted to prevent the State of New York from placing a group home in their neighborhood for people with mental disabilities.

[7][8][9][10] According to the United States Census Bureau, the CDP has a total area of 0.6 square miles (1.6 km2), all land.

[12][13] The hamlet itself is predominantly residential in character, with the heavy majority of lots within the village being zoned for single-family homes.

[14] The only area of Manhasset Hills zoned for commercial or industrial uses is located at the extreme southwest corner of the hamlet.

[14][23] Lake Success is located entirely within New York's 3rd Congressional district, which as of August 2024 is represented in the United States Congress by Thomas R. Suozzi (D–Glen Cove).

[14][24] Like the rest of New York, Manhasset Hills is represented in the United States Senate by Charles Schumer (D) and Kirsten Gillibrand (D).

[26][27][28] Manhasset Hills is primarily located within the boundaries of (and is thus served by) the Herricks Union Free School District, although the westernmost portion of the hamlet is located within the boundaries of the Great Neck Union Free School District.

[14] 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.

[30] The former Long Island Motor Parkway's right-of-way now serves as the route of a power line through the area.