Eggertsville is a hamlet and census-designated place (CDP) within the town of Amherst in Erie County, New York, United States.

As delineated by the U.S. Census Bureau, the northern boundary of the CDP is New York State Route 324, and the eastern boundary is formed by Getzville Road and Berryman Drive.

The southern and western borders of the CDP follow the town boundary of Amherst.

New York State Route 5, Main Street, passes through the CDP, leading southwest to the center of Buffalo and east towards Williamsville in the town of Amherst.

According to the United States Census Bureau, the CDP has a total area of 2.9 square miles (7.4 km2), all land.