Area Code 817

About Area Code 817

Area code 817 is a geographic telephone area code assigned to Fort Worth, Texas. It operates in the Central time zone and was first introduced in 1953. Split from 214. North-central Texas. Overlay 682 (2000).

Within Texas, area code 817 shares numbering capacity with 27 other area codes. The state's 30,503,301-person population (2023 Census Bureau estimate) is served by a combined 28 active codes, with 817 primarily responsible for the Fort Worth region. Texas's state capital is Austin, and its largest city is Houston.

When you receive a call from a 817 number on your Caller ID, the call originated from a phone number assigned to the 817 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 817 only confirms where the number was originally assigned.

Where is the 817 area code located?

Area code 817 is assigned to Fort Worth, Texas, in the Central time zone. The state of Texas uses 28 active area codes, and 817 is one of them. Calls placed from the 817 area code originate from numbers assigned by NANPA — the North American Numbering Plan Administrator — and the 817 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 817 area code?

The 817 area code serves 11 notable cities, listed below in order of population. The largest city in the 817 territory is Fort Worth (956,709 residents in Tarrant County).

• Fort Worth, TX — 956,709 residents (10.4% of 817 numbers)
• Houston, TX — 2,302,878 residents (25.1% of 817 numbers)
• Dallas, TX — 1,304,379 residents (14.2% of 817 numbers)
• San Antonio, TX — 1,434,625 residents (15.6% of 817 numbers)
• Austin, TX — 974,447 residents (10.6% of 817 numbers)
• El Paso, TX — 678,058 residents (7.4% of 817 numbers)
• Arlington, TX — 394,266 residents (4.3% of 817 numbers)
• Corpus Christi, TX — 317,863 residents (3.5% of 817 numbers)
• Plano, TX — 285,494 residents (3.1% of 817 numbers)
• Lubbock, TX — 263,930 residents (2.9% of 817 numbers)

Phone number format in area code 817

All phone numbers within area code 817 follow the standard North American 10-digit format:(817) 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 + 817 + 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 817 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 817

Split from 214. North-central Texas. Overlay 682 (2000).

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 817 area code safe to answer?

Area code 817 itself is a normal geographic code with no elevated spam risk. That said, scammers can spoof any area code — including 817 — so if you don't recognize the full number, let it go to voicemail and verify the caller's identity before calling back.