What is what area code is 856?

Area code 856 is a telephone area code in the North American Numbering Plan (NANP) for the southern part of the state of New Jersey in the United States. It covers areas such as Camden County, Gloucester County, and parts of Burlington and Atlantic counties. The area code was created in 1999 as an overlay of area code 609 to provide additional phone number capacity in the region. Some of the major cities served by area code 856 include Camden, Cherry Hill, Vineland, and Glassboro.