Area code 220 is located in southeastern and central parts of Ohio, USA. It is an overlay for area code 740 and serves the same area. The cities covered by area code 220 include Newark, Lancaster, Marion, Athens, and Zanesville, among others. The area code was established on April 22, 2015, and went into service on the same day. If you are in the area code 220 region, you will need to dial the full ten-digit telephone number for all calls within the numbering plan area.