Editing Teaneck, New Jersey (section)

===Historical population===
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.

After [[World War II]], the 1950 Census showed growth in Teaneck (33.6%) pacing Bergen County overall (31.6%). Starting in 1960, a substantial decline in the rate of growth compared to Bergen County occurred as Teaneck reached the limits of developable land, and the township neared its peak population. Population growth in the 1970 Census was small, but positive, with Teaneck reaching its historical maximum of 42,355. Absolute declines in population followed in both the 1980 (−7.9%) and 1990 (−3.0%) data. The 2000 Census showed recovery in Teaneck's population to 39,260, though growth (3.8%) was smaller than in Bergen County overall (7.1%).<ref name=Census2000/>

With almost no land left to develop for housing, Teaneck's population is likely to remain stable for the foreseeable future. A reluctance to permit high-rise development as a means to increase population density also places a limit on growth. Changes in family size and the possibility of zoning changes to allow denser construction are some of the few influences that may affect population over time.<ref>Gale, Pat. [https://nj.cooperatornews.com/article/diverse-by-design "Diverse By Design"], ''Cooperator News New Jersey'', October 2010. Accessed November 21, 2023. "Encompassing just over six square miles and having little land left to develop, the township is limited in its ability to grow; its population has remained fairly steady over the past half-century, after dipping during a period of racial turmoil in the 1960s."</ref>