what area code is 920

Area code 920 is located in eastern Wisconsin and covers Green Bay, Appleton, and Oshkosh. It is the only area code that serves the area. Area code 920 was created on July 26, 1997, in a split of area code 414. Prior to October 2021, area code 920 had telephone numbers assigned for the central office code 988. In 2020, 988 was designated nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict because area code 920 permitted seven-digit dialing. 920 transitioned to ten-digit dialing on October 24, 2021.