<P> Area codes 234 and 330 are North American telephone area codes for part of northeast Ohio, United States . Area code 330 was established on March 9, 1996, and was Ohio's first new area code since the North American Numbering Plan started in 1947 . </P> <P> The overlay, area code 234, was established on October 30, 2000, but phone numbers were not assigned to it until 2003 . They cover the Akron, Canton, Youngstown, and Warren areas . Ten - digit dialing has been mandatory since October 1, 2000 . </P>

What part of ohio is area code 330