| <table border="1"> | |
| <tr><td>Code</td><td>Created</td><td>Region</td></tr> | |
| <tr><td>216</td><td>1947</td><td>Cleveland (October 1947)</td></tr> | |
| <tr><td>220</td><td>2015</td><td>Central and southeastern Ohio except Columbus, overlay with 740 (April 22, 2015)</td></tr> | |
| <tr><td>234</td><td>2000</td><td>Akron, Canton, Youngstown, and Warren, overlay with 330 (October 30, 2000)</td></tr> | |
| <tr><td>326</td><td>2018</td><td>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</td></tr> | |
| <tr><td>330</td><td>1996</td><td>Akron, Canton, Youngstown, and Warren, overlay with 234 (March 9, 1996)</td></tr> | |
| <tr><td>380</td><td>2016</td><td>Columbus, overlay with 614 (February 27, 2016)</td></tr> | |
| <tr><td>419</td><td>1947</td><td>Northwest and north central Ohio including Toledo, Sandusky, and Ashland, overlay with 567 (October 1947)</td></tr> | |
| <tr><td>440</td><td>1997</td><td>Part of Northeast Ohio including parts of Cleveland (August 16, 1997)</td></tr> | |
| <tr><td>513</td><td>1947</td><td>Southwest Ohio including Cincinnati (October 1947)</td></tr> | |
| <tr><td>567</td><td>2002</td><td>Northwest and north central Ohio including Toledo, Sandusky, and Ashland, overlay with 419 (January 1, 2002)</td></tr> | |
| <tr><td>614</td><td>1947</td><td>Columbus, overlay with 380 (October 1947)</td></tr> | |
| <tr><td>740</td><td>1997</td><td>Central and southeastern Ohio except Columbus, overlay with 220 (December 6, 1997)</td></tr> | |
| <tr><td>937</td><td>1996</td><td>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)</td></tr> | |
| </table> | |