Middletown Township is a township in Monmouth County, New Jersey, United States. As of the 2010
United States Census, the township had a total population of 66,522, making it the state's 16th
largest municipality, having seen an increase of 195 residents from its population of 66,327 in the
2000 Census, when it was the state's 17th most populous municipality, which had in turn declined by
1,856 from the 68,183 counted in the 1990 Census. Middletown is one of the oldest sites of European
settlement in New Jersey.