The area code 817 is located in Arlington, Texas.
Area code 817 serves Arlington, Texas, and anchors the western side of the Dallas–Fort Worth metroplex in North Texas. It covers much of Tarrant County, connecting major suburbs, business districts, and entertainment hubs across the region. Arlington sits between Dallas and Fort Worth, making 817 a key local phone number prefix for commuters, visitors, and residents. You’ll find 817 on phones for schools, hospitals, and local businesses throughout the city.
Major cities and landmarks in the 817 service area include:
Established in 1953 from a split of 214, 817 is one of Texas’s long-standing area codes. It later split in 1997 to create area codes 254 and 940, and gained the 682 overlay in 2000, which introduced mandatory ten‑digit dialing. Today, both 817 and 682 numbers serve Arlington and nearby communities without changing existing phone numbers. The code operates in the Central Time Zone (CT) and follows Daylight Saving Time.
"Arlington’s population was 394,266 in 2020." — U.S. Census Bureau, 2020 Census
For anyone seeing an 817 phone number, it typically traces back to Arlington or the greater Fort Worth area under the North American Numbering Plan. The code links fans to big-league sports, students to UT Arlington, and travelers to nearby DFW attractions. With its deep roots and modern overlay, area code 817 remains a trusted identifier for Arlington, TX.