Area code 856 serves southwestern New Jersey, including Camden, Cherry Hill, Vineland, and other communities across the Delaware River from Philadelphia. It was established in 1999 from a split with 609 and covers a region that blends suburban life, agriculture, and old industrial towns. The area includes commuter suburbs of Philadelphia and historically rich towns like Haddonfield. Seven-digit dialing remains available locally. Area code 856 is a key part of South Jersey’s identity, distinguishing it from both the Philadelphia metro and the Jersey Shore.