Code	Created	Region
216	1947	Cleveland (October 1947)
220	2015	Central and southeastern Ohio except Columbus, overlay with 740 (April 22, 2015)
234	2000	Akron, Canton, Youngstown, and Warren, overlay with 330 (October 30, 2000)
326	2018	Southwestern part of Ohio including Dayton, Marysville, Peebles, Springfield, public parts of Wright-Patterson Air Force Base, and areas north of Cincinnati, planned overlay with 937
330	1996	Akron, Canton, Youngstown, and Warren, overlay with 234 (March 9, 1996)
380	2016	Columbus, overlay with 614 (February 27, 2016)
419	1947	Northwest and north central Ohio including Toledo, Sandusky, and Ashland, overlay with 567 (October 1947)
440	1997	Part of Northeast Ohio including parts of Cleveland (August 16, 1997)
513	1947	Southwest Ohio including Cincinnati (October 1947)
567	2002	Northwest and north central Ohio including Toledo, Sandusky, and Ashland, overlay with 419 (January 1, 2002)
614	1947	Columbus, overlay with 380 (October 1947)
740	1997	Central and southeastern Ohio except Columbus, overlay with 220 (December 6, 1997)
937	1996	Southwestern part of Ohio including Dayton, Marysville, Peebles, Springfield, public parts of Wright-Patterson Air Force Base, and areas north of Cincinnati, planned overlay with 326 (September 28, 1996)