High Quality Content by WIKIPEDIA articles! Edison Township (usually known as Edison) is a township in Middlesex County, New Jersey. What is now Edison Township was originally incorporated as Raritan Township by an Act of the New Jersey Legislature on March 17, 1870, from portions of both Piscataway Township and Woodbridge Township. Portions of the township were taken to form Metuchen on March 20, 1900, and Highland Park on March 15, 1905. The name was officially changed to Edison Township on November 10, 1954, in honor of inventor Thomas Edison, who had his main laboratory in the Menlo Park section of the township. As of the 2010 United States Census, Edison had a total population of 99,967, adding 2,280 residents (2.3%) from its 2000 Census population of 97,687 and retaining its position as the fifth largest municipality in New Jersey.