Area code 862 is an overlay for area code 973, covering northern New Jersey cities such as Newark, Paterson, and Morristown. Introduced in 2001, 862 was implemented to meet the demand for new numbers in this densely populated and economically active area. The overlay necessitated ten-digit dialing for all calls within the 973/862 region. 862 is frequently assigned to mobile devices and newer residential and commercial accounts. Though newer than 973, it plays a key role in supporting the telecommunications infrastructure of North Jersey. The area continues to thrive with its diverse communities, educational institutions, and close proximity to New York City.