Area Code 317 History:
Area code 317 was put into service. In 1997 Area code 317 was split to form area code 765.
Counties in Indiana within area code 317 include:
Boone County, Carroll County, Decatur County, Hamilton County, Hancock County, Hendricks County, Johnson County, Marion County, Morgan County, Owen County, Shelby County, and Union County.
Major cities or places in Indiana within area code 317 include:
Area code 317 serves the Indianapolis metropolitian area including the larger cities and communities of Carmel, Fishers, Greenwood, Indianapolis, Lawrence, and Noblesville in addition to many smaller communities.