Ohio area codes
The table below lists every active Ohio area code with its coverage, service date and prefix count. 14 of the 15 codes are overlays — added on top of existing territories as numbers ran short.
Geographically the map reads: 330 (Akron), 740 (Newark), 513 (Cincinnati), 419 (Toledo), 937 (Dayton), 614 (Columbus), 440 (Willoughby), 216 (Cleveland), with 6 more codes covering the rest of the state. Each code page lists its full coverage down to individual rate centers.
Overlay territory: 220/740, 234/330, 283/513, 326/937, 380/614 and more — same geography, several codes, ten-digit local dialing.
Recent numbering history: 220 arrived in 2015, 380 arrived in 2016, 326 arrived in 2020, 283 arrived in 2023, 436 arrived in 2024 — overlays added as existing codes approached exhaust.
Time zone is uniform across the state's codes: Eastern.
Note that toll-free codes (800, 833, 844, 855, 866, 877, 888) sit outside this list — they have no geographic tie to Ohio or anywhere else, and are assigned individually from the national SMS/800 registry.
As everywhere in the NANP: these codes say where numbers were issued, not where callers are. Per-code pages break coverage down to rate centers and prefixes.
| Code | Major area | In service | Overlay complex | Prefixes |
|---|---|---|---|---|
| 216 | Cleveland | 1947 | — | 607 |
| 220 | Athens | 2015 | 220/740 | 136 |
| 234 | Akron | 2000 | 234/330 | 389 |
| 283 | Cincinnati | 2023 | 283/513 | 46 |
| 326 | Dayton | 2020 | 326/937 | 83 |
| 330 | Akron | 1996 | 234/330 | 787 |
| 380 | Columbus | 2016 | 380/614 | 131 |
| 419 | Toledo | 1947 | 419/567 | 783 |
| 436 | — | 2024 | 436/440 | — |
| 440 | Willoughby | 1997 | 436/440 | 757 |
| 513 | Cincinnati | 1947 | 283/513 | 784 |
| 567 | Toledo | 2002 | 419/567 | 413 |
| 614 | Columbus | 1947 | 380/614 | 778 |
| 740 | Newark | 1997 | 220/740 | 786 |
| 937 | Dayton | 1996 | 326/937 | 780 |
FAQ
How many area codes does Ohio have?
15 geographic area codes are currently in service: 216, 220, 234, 283, 326, 330, 380, 419, 436, 440, 513, 567, 614, 740, 937.
What was Ohio's first area code?
216, in service since 1947.
Will Ohio get a new area code soon?
Not soon. The earliest exhaust forecast in the state is 419 at 4Q 2041, so current codes have ample capacity.
Which time zone are Ohio numbers in?
All Ohio area codes are in the Eastern time zone.