Clinton Township was a township located in Essex County, New Jersey, United States, which existed from 1834 to 1902. Clinton Township was created on April 14, 1834, from portions of Elizabeth Township, Newark Township, Orange Township and Union Township. Clinton Township included present-day Irvington and Maplewood and parts of Newark and South Orange. On April 1, 1861, South Orange Township (now Maplewood) was formed from portions of Clinton Township and Orange.