 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.