Arkansas · Central Time
870 Area Code
Area code 870 is in Arkansas, serving eastern and southern Arkansas outside the Little Rock area, plus north-central Arkansas. It is in the Central Time zone. It shares its territory with overlay code 327, so 10-digit dialing is required.
Last updated October 1, 2026 · Source: NANPA
Where is the 870 area code?
870 is a Arkansas area code covering eastern and southern Arkansas outside the Little Rock area, plus north-central Arkansas. In the wider directory it sits in the South region.
Cities in the 870 area code
- Jonesboro
- Pine Bluff
- Texarkana
- El Dorado
- Paragould
- Blytheville
- West Memphis
- Harrison
- Mountain Home
- Batesville
- Forrest City
- Magnolia
- Helena-West Helena
Counties served by 870
Craighead County, Jefferson County, Miller County, Union County, Greene County, Mississippi County, Crittenden County, Boone County, Baxter County and Independence County.
870 overlay codes and dialing
The 870 territory is covered by an overlay of 2 area codes: 327, 870. All of them serve the same geographic area, and the original code is 870. Because more than one code covers the same ground, 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.
History of the 870 area code
870 went into service on April 14, 1997, created when it was split from 501. It serves Jonesboro and the surrounding part of Arkansas, and today shares its territory with overlay code 327. 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 in Jonesboro, AR 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, covering eastern and southern Arkansas outside the Little Rock area, plus north-central Arkansas, in the South region.
What cities are in the 870 area code?
Cities in the 870 area code include Jonesboro, Pine Bluff, Texarkana, El Dorado, Paragould, Blytheville, West Memphis, Harrison, Mountain Home and Batesville.
What time zone is 870 in?
870 is in the Central Time zone.
What is the overlay for the 870 area code?
870 shares its territory with 327. Both codes (327, 870) serve the same area, so 10-digit dialing is required for every call.
When did the 870 area code start?
870 went into service on April 14, 1997.
Do I have to dial 10 digits for 870?
Yes. Because 870 is an overlay area, you must dial the full 10-digit number (area code + 7 digits) for every call.
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.