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The first nationwide telephone numbering plan of 1947 divided Ohio into four numbering plan areas (NPAs), one each for a quadrant of the state: 216, 419, 513, and 614. In 1996, 330 and 937 were added by splitting existing NPAs. In 1997, 440 and 740 were added in additional area code splits.
There are two lists that Wirefly provides for the area codes in Ohio. The first table below shows the most populated cities in Ohio with the area codes listed next to them. The next table shows the all the Ohio state area codes by number with the names of the city they are used in.
An Interactive Map of All Ohio Area Codes - September 2024.
To find information on a specific area code, use the area code lookup that makes it easy to find an area code by number and gives detailed information including city/state, timezone, and area code maps.
Ohio area codes map gives information about all the area codes of Ohio state along with their counties list.
Our area code lookup makes it easy to find area codes in Ohio. Includes area code listings of all Ohio area codes with corresponding cities.
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The first nationwide telephone numbering plan of 1947 divided Ohio into four numbering plan areas (NPAs), one each for a quadrant of the state: 216, 419, 513, and 614. In 1996, 330 and 937 were added by splitting existing NPAs. In 1997, 440 and 740 were added in additional area code splits.
