Ohio Area Codes
Directory of all 15 telephone area codes assigned to Ohio.
Ohio phone numbers are served by 15 area codes operating in the Eastern timezone.Because an overlay is active, 10-digit dialing is mandatory across much of the state. No area codes in Ohio are currently flagged as high-risk scams.
Most populated prefix: area code 436 (Ohio)
All Area Codes in Ohio
Area Code 216
Cleveland, Parma, Lakewood, Cleveland Heights, Garfield Heights, East Cleveland, Seven Hills, Brooklyn, Independence, Milford
Area Code 220
Kettering, Newark, Delaware, Lancaster, Marion, Athens, Centerville, Zanesville, Chillicothe, Pataskala
Area Code 234
Akron, Canton, Youngstown, Cuyahoga Falls, Warren, Brunswick, Stow, Massillon, Kent, Green
Area Code 283
Cincinnati, Hamilton, Middletown, Mason, Oxford, Lebanon, Norwood, Monroe, Trenton, Harrison
Area Code 326
Dayton, Springfield, Kettering, Beavercreek, Fairfield, Huber Heights, Fairborn, Marysville, Troy, Xenia
Area Code 330
Akron, Canton, Youngstown, Cuyahoga Falls, Warren, Brunswick, Stow, Massillon, Kent, Green
Area Code 380
Columbus, Dublin, Grove City, Reynoldsburg, Hilliard, Westerville, Gahanna, Upper Arlington, Pickerington, Whitehall
Area Code 419
Toledo, Mansfield, Findlay, Lima, Bowling Green, Perrysburg, Sandusky, Oregon, Sylvania, Ashland
Area Code 436
Cleveland, Parma, Lorain, Elyria, Lakewood, Euclid, Mentor, Strongsville, Cleveland Heights, North Ridgeville
Area Code 440
Cleveland, Parma, Lorain, Elyria, Lakewood, Euclid, Mentor, Strongsville, Cleveland Heights, North Ridgeville
Area Code 513
Cincinnati, Hamilton, Middletown, Fairfield, Mason, Oxford, Lebanon, Norwood, Monroe, Trenton
Area Code 567
Toledo, Mansfield, Findlay, Lima, Bowling Green, Perrysburg, Sandusky, Oregon, Sylvania, Ashland
Area Code 614
Columbus, Dublin, Grove City, Reynoldsburg, Hilliard, Westerville, Gahanna, Upper Arlington, Pickerington, Whitehall
Area Code 740
Kettering, Newark, Delaware, Lancaster, Marion, Athens, Centerville, Zanesville, Chillicothe, Pataskala
Area Code 937
Dayton, Springfield, Kettering, Beavercreek, Fairfield, Huber Heights, Fairborn, Marysville, Troy, Xenia
Major Cities Served by Ohio Area Codes
The most populous urban centers and census places covered by Ohio's area codes, ranked by population.
Ohio Area Code FAQs
Quick answers to common questions about Ohio telephone area codes.
How many area codes does Ohio have?
Ohio has 15 area codes: 216, 220, 234, 283, 326, 330, 380, 419, 436, 440, 513, 567, 614, 740, 937.
What timezone do Ohio area codes use?
Ohio area codes operate in the Eastern timezone.
What is the most populated area code in Ohio?
Area code 436 is the most populous prefix in Ohio based on covered city population.
Which Ohio area codes share an overlay?
220 and 740, 234 and 330, 283 and 513, 326 and 937, 380 and 614, 419 and 567, 436 and 440. Overlay codes serve the same area, which is why 10-digit dialing is required.
Are there scam area codes in Ohio?
Ohio has no area codes currently flagged as high-risk scams.
About Ohio Area Codes & Phone Dialing Rules
When placing calls within Ohio, ten-digit dialing (area code + 7-digit telephone number) is required in overlay regions where multiple area codes serve the same geographic boundaries.