Area code 620area code / From Wikipedia, the free encyclopedia Area Code 620 is an area code for most of southern Kansas. It was made on February 3, 2001. The area code goes from the Colorado border to the east, to the Missouri border. 316 is inside it, and it's only for Wichita. Map of Kansas with area code 620 in red
Area Code 620 is an area code for most of southern Kansas. It was made on February 3, 2001. The area code goes from the Colorado border to the east, to the Missouri border. 316 is inside it, and it's only for Wichita. Map of Kansas with area code 620 in red