Area Code 317 is one of the original area codes created on October 1947. Originally the code was assigned to the southern and central regions of Indiana. The 317 code started running out of available phone numbers within a year and the code split off in 1948. As a result new area code 219 was formed for serving the northern regions of Indiana State.
Ultimately, population spurts and amplified demands for telephone numbers just made the area exhausted ? existing area required another split once again. In around 1997 the 317 area code split once again and formed the 765 area code. Newly created area code started serving central Indiana while the Indianapolis area kept the code 317.
The State of Indiana is East North Central state. East North Central division of United States of America covers following five states:
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