what area code is 516

The 516 area code is a New York area code for the southeastern parts of the state, specifically Nassau County on Long Island. It covers cities such as Hempstead, Levittown, and Freeport. The 516 area code was created in 1951 and was split in 1999, creating the need to update some phone numbers to area code 631. In 2023, area code 363 was added to the numbering plan area as an overlay to 516.