Indiana · Eastern Time
317 Area Code
The 317 area code is a telephone area code in Indiana, covering Indianapolis and the surrounding area. It lies in the Eastern Time zone for most of its territory.
Last updated June 5, 2026
Where is the 317 area code?
317 serves Indianapolis and nearby communities in Indiana. In the wider directory it sits in the Midwest region.
Time zone note: Most of Indiana is Eastern; counties near Chicago and Evansville observe Central.
Overlay codes serving Indianapolis
Indianapolis is served by an overlay of 2 area codes: 317, 463. Because more than one code covers the same area, 10-digit dialing is mandatory — you must dial the area code for every local call. New phone lines may be assigned any of these codes, so Indianapolis numbers are no longer tied to a single prefix.
History of the 317 area code
317 is one of the original area codes assigned in 1947, when AT&T and Bell Laboratories created the North American Numbering Plan and divided the country into the first 86 numbering plan areas. It has served the Indianapolis area ever since.
Is 317 a scam or spam risk?
317 is a legitimate geographic area code, not a premium or toll line, so a call from it costs you nothing extra. That said, scammers frequently spoof real local area codes to look familiar on caller ID. A genuine 317 number on your screen is no guarantee the caller is local or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Other Indiana area codes
Explore more
See every code in Indiana, compare codes across the Midwest region, or view all Eastern Time codes. You can also browse the 3XX block or the complete numeric list of US area codes.
New to how this all works? Start with how area codes work, then read up on overlays, 10-digit dialing, and spam & scam-risk codes. To check another number, use the area code lookup tool.
Quick answers
317 area code FAQ
Where is the 317 area code?
The 317 area code is in Indiana, serving Indianapolis and the surrounding area in the Midwest region.
What time zone is 317 in?
317 is in the Eastern Time zone. Most of Indiana is Eastern; counties near Chicago and Evansville observe Central.
Do I have to dial 10 digits for 317?
Yes. Because Indianapolis is an overlay area, you must dial the full 10-digit number (area code + 7 digits) for every call.
Is 317 a toll-free or premium code?
No. 317 is a standard geographic area code, so calling it costs the same as any local or long-distance call on your plan. Toll-free calls use 800, 888, 877, 866, 855, 844 or 833.