Geographic Regions and Area Codes

Area Code 317 is located in the state of Indiana, primarily covering the city of Indianapolis and its surrounding regions. This area code encompasses several major cities including Carmel, Fishers, Noblesville, and Greenwood. It spans across multiple counties such as Marion, Hamilton, Hancock, Hendricks, Johnson, Boone, Morgan, Shelby, and Brown. Due to the increasing demand for phone numbers, an overlay area code, 463, has been introduced to serve the same geographic region. Adjacent area codes include 765, which covers central Indiana excluding Indianapolis, and 812/930, which serve southern Indiana.