Totowa is a borough in Passaic County, New Jersey, United States. As of the 2010 United States Census, the borough's population was 10,844, reflecting an increase of 912 (+9.2%) from the 9,892 counted in the 2000 Census, which had in turn declined by 285 (-2.8%) from the 10,177 counted in the 1990 Census. Totowa was formed as a borough by an act of the New Jersey Legislature on March 15, 1898, from portions of the now-defunct Manchester Township and Wayne Township.