 6.3% of residents identified themselves as being of West Indian ancestry, of which 3.4% were from Jamaica.After its founding as a township, Teaneck saw rapid growth in its population during the first half of the 20th century.As Teaneck changed from a sparsely populated rural area into a suburb, particularly after development of property that had been part of the Phelps Estate started in the late 1920s, Teaneck's population grew rapidly, far outpacing the growth of Bergen County.