Midwest region · Eastern Time
Ohio Area Codes
All 11 area codes serving Ohio, the cities each one covers, and which are overlays. Ohio is served by 11 area codes in the Eastern Time zone.
Last updated June 5, 2026
Full list
Every Ohio area code
Ohio is served by 11 area codes in the Eastern Time zone. 4 of these are overlay codes layered over busy metros; the rest are geographic codes.
| Code | Main city | Type | Status |
|---|---|---|---|
| 216 | Cleveland | Geographic | In service |
| 220 | Newark | Geographic | In service |
| 234 | Akron | Overlay | In service |
| 330 | Akron | Overlay | In service |
| 419 | Toledo | Geographic | In service |
| 440 | Cleveland | Overlay | In service |
| 513 | Cincinnati | Geographic | In service |
| 567 | Toledo | Overlay | In service |
| 614 | Columbus | Geographic | In service |
| 740 | Athens | Geographic | In service |
| 937 | Dayton | Geographic | In service |
Area codes and dialing in Ohio
Ohio's 11 area codes mix older geographic codes with newer overlays. The busiest metros — around Akron, Athens, Cincinnati — carry the most numbers and rely on overlays, which is why 10-digit dialing is required there. Quieter parts of the state may still use a single code. The original code in the Ohio list is 216 (Cleveland).
Whenever a Ohio region runs low on numbers, a new overlay is added on top rather than splitting the map, so existing customers keep their numbers. See 10-digit dialing for what that means in practice, or the newest area codes for upcoming changes.
Cities with multiple area codes
These Ohio metros are served by an overlay of two or more codes, so 10-digit dialing applies: Akron · Cleveland · Toledo.
Browse Ohio another way
Explore by Midwest region, by time zone, or jump to the city index. You can also see the complete numeric list of every US area code.
Quick answers
Ohio area code FAQ
How many area codes does Ohio have?
Ohio currently has 11 area codes: 216, 220, 234, 330, 419, 440, 513, 567, 614, 740, 937.
What is the main area code for Ohio?
The busiest metro in Ohio is served by the 216 code. Major cities include Akron, Athens, Cincinnati, Cleveland, Columbus.
Does Ohio require 10-digit dialing?
Yes, in its overlay metros you must dial all 10 digits. Ten-digit dialing is the national standard.