Edison Township is a township in Middlesex County, New Jersey, United States. As of the United States 2000 Census, the township had a total population of 97,687, making it at the time the fifth largest municipality in New Jersey. As of the U.S. Census 2005 estimate, the population of Edison was 100,499, although the 2006 estimate had the township's population back down to 99,523, moving down a notch behind Woodbridge Township into sixth place. Edison apartments for rent comparison page shows most up to date rent information on Edison apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.