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Area code 440 is a North American telephone area code for the state of Ohio, serving parts of the Greater Cleveland area, but not the city of Cleveland or most of its inner suburbs. This area code was established August 16, 1997. Area code 440 was formed by a three-way split of Area code 216, one of the original North American Numbering Plan codes. Area code 330 was created in 1996 from the southern part of 216 and 440 was added the following year to keep up with the increasing number of cellular phones, as well as population factors.
440 covers all of Lake and Geauga counties. It serves almost all of Ashtabula and Lorain counties, part of Erie County, and the northeast corner of Huron County as well as the northwest part of Trumbull County. Finally, 440 shares Cuyahoga County with area code 216.