Arkansas · Central Time
870 Area Code
The 870 area code is a telephone area code in Arkansas, covering Jonesboro and the surrounding area. It lies in the Central Time zone.
Last updated June 5, 2026
Where is the 870 area code?
870 serves Jonesboro and nearby communities in Arkansas. In the wider directory it sits in the South region.
Dialing 870
Jonesboro is currently served by the single area code 870. Ten-digit dialing (area code + seven-digit number) always works and is increasingly the norm nationwide; some local calls may still connect with seven digits. If a future overlay is added, 10-digit dialing would become mandatory.
History of the 870 area code
870 is a geographic area code serving Jonesboro and the surrounding part of Arkansas. It was added after the original 1947 plan as telephone demand grew. For how codes are created, split, and overlaid, see how area codes work.
Is 870 a scam or spam risk?
870 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 870 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.
Explore more
See every code in Arkansas, compare codes across the South region, or view all Central Time codes. You can also browse the 8XX 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
870 area code FAQ
Where is the 870 area code?
The 870 area code is in Arkansas, serving Jonesboro and the surrounding area in the South region.
What time zone is 870 in?
870 is in the Central Time zone.
Do I have to dial 10 digits for 870?
Ten-digit dialing always works, and many areas now require it; some local calls in this area may still connect with seven digits.
Is 870 a toll-free or premium code?
No. 870 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.