Area Code 870

About Area Code 870

Area code 870 is a geographic telephone area code assigned to Jonesboro, Arkansas. It operates in the Central time zone and was first introduced in 1997. Split from 501. Most of Arkansas outside Little Rock area.

Within Arkansas, area code 870 shares numbering capacity with 2 other area codes. The state's 3,067,732-person population (2023 Census Bureau estimate) is served by a combined 3 active codes, with 870 primarily responsible for the Jonesboro region. Arkansas's state capital is Little Rock, and its largest city is Little Rock.

When you receive a call from a 870 number on your Caller ID, the call originated from a phone number assigned to the 870 area code — but be aware that Local Number Portability (in effect since 2003) means the caller could be physically located anywhere in the US or Canada. Area code 870 only confirms where the number was originally assigned.

Where is the 870 area code located?

Area code 870 is assigned to Jonesboro, Arkansas, in the Central time zone. The state of Arkansas uses 3 active area codes, and 870 is one of them. Calls placed from the 870 area code originate from numbers assigned by NANPA — the North American Numbering Plan Administrator — and the 870 prefix appears on Caller ID for both landline and wireless calls placed from this region.

The Central time zone observes Daylight Saving Time, shifting from UTC-6 to UTC-5 in summer. The local time shown above is always current, so you can quickly check whether it's a reasonable hour to call back.

What cities and counties use the 870 area code?

The 870 area code serves 12 notable cities, listed below in order of population. The largest city in the 870 territory is Jonesboro (81,463 residents in Unknown County).

• Jonesboro, AR — 81,463 residents (8.8% of 870 numbers)
• Little Rock, AR — 202,591 residents (21.9% of 870 numbers)
• Fort Smith, AR — 89,142 residents (9.6% of 870 numbers)
• Fayetteville, AR — 87,590 residents (9.5% of 870 numbers)
• Springdale, AR — 84,161 residents (9.1% of 870 numbers)
• Conway, AR — 70,376 residents (7.6% of 870 numbers)
• Rogers, AR — 71,289 residents (7.7% of 870 numbers)
• Bentonville, AR — 57,453 residents (6.2% of 870 numbers)
• Hot Springs, AR — 37,993 residents (4.1% of 870 numbers)
• Pine Bluff, AR — 41,473 residents (4.5% of 870 numbers)

Phone number format in area code 870

All phone numbers within area code 870 follow the standard North American 10-digit format:(870) NXX-XXXX. The NXX is the central office prefix (also called an "exchange") and XXXX is the subscriber line number. For long-distance calls within the NANP, dial 1 + 870 + NXX + XXXX. From outside North America, dial your country's international access code, then 1 (the NANP country code), then the 10-digit number.

If you need to verify whether a specific 870 number is wireless, landline, or VoIP, you can use our reverse phone lookup tool. Be aware that number portability means the area code no longer guarantees the caller's physical location — only where the number was first assigned.

History of area code 870

Split from 501. Most of Arkansas outside Little Rock area.

The original 86 area codes were assigned by AT&T and Bell Labs in 1947 as part of the North American Numbering Plan. At the time, rotary-dial phones meant codes with lower digits (like 212 for NYC, 213 for LA, 312 for Chicago) were given to the largest cities because they took less time to dial. Today's area code assignments still reflect those early choices, even though touch-tone and cell phones made the original reason obsolete.

Is the 870 area code safe to answer?

Area code 870 itself is a normal geographic code with no elevated spam risk. That said, scammers can spoof any area code — including 870 — so if you don't recognize the full number, let it go to voicemail and verify the caller's identity before calling back.