Area code 621: where it is and who calls from it
Area code 621 is in Texas.
Texas (Houston area)
| Where | Texas |
|---|---|
| Time zone | Central Time ยท local time |
| In service since | 2025 |
| Overlay | Yes, with 281, 346, 713, 832 |
Overlay: 621 covers the same area as 281, 346, 713, 832. Overlay areas use 10-digit dialing, so a seven-digit number alone won't connect, and neighbors can have different area codes.
Other area codes in Texas
210 214 254 281 325 346 361 409 430 432 469 512 682 713 726 737 806 817 830 832 903 915 936 940 945 956 972 979
Got a call from 621?
An area code tells you where a number was first assigned, not where the caller is. People keep their numbers when they move, and scammers can fake any number. If you weren't expecting the call, let it go to voicemail.
If the call shows a 621 number that matches the first six digits of your own, that's often neighbor spoofing. Use the box above to check the full number.
Area code facts from the NANPA area code database (updated 10/06/2026); prefixes and carriers from NANPA's central office code records (updated 2026-10-10). Place description adapted from Wikipedia, CC BY-SA 4.0.