Incorporated in 1896, Ardsley would continue to grow at a steady pace, until a fire destroyed the village center in 1914. This led to the reconstruction of several buildings, and the establishment of a fire department in the former schoolhouse.
Two more population booms would follow, the first spanning the time between the end of the first World War and the beginning of the Depression, and the second following World War II. This second boom led to the eventual construction of several village schools, including Concord Road Elementary School (1952), Ardsley High School (1958), and Ardsley Middle School (1967).
The village was also greatly changed by the construction of the New York State Thruway in the late 1950s, which resulted in both the loss of the Ardsley station on the Putnam Division of the New York Central Railroad and the loss of much of the downtown business district.