713 area code — Houston, TX geographic
- State
- Texas
- Major area
- Houston
- Time zone
- Central
- In service since
- 1947-01-01
- Active prefixes
- 785
- Rate centers
- 18
- Carriers
- 29
- Projected exhaust
- 2Q 2039
Area code 713 is a geographic code serving Houston, Texas in the Central time zone. It has been in service since January 1, 1947. It is part of the 281/346/621/713/832 overlay complex — these codes share the same territory. Note that porting and VoIP mean a 713 number can be used from anywhere — the code marks where the number was assigned.
785 central-office prefixes are currently active in this code, spread across 29 code-holding carriers. Thousands-block pooling applies to 338 prefixes, so a single prefix can belong to several carriers. Its prefixes map to 18 distinct rate centers.
It has since spawned 409 (1982), 281 (1996), 832 (1999).
NANPA projects numbering capacity for the 281/346/621/713/832 complex to exhaust in 2Q 2039.
Dialing: 10D locally, 10D to other codes (1+10 digit permissible at service provider discretion.).
Practical takeaway: the 713 label narrows geography to Texas, the prefix narrows it to a locality, and neither authenticates a caller. Verification means calling back through a number you found yourself.
Largest localities in 713
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Houston | 738 | 281, 346, 832 |
| Houston Suburban | 20 | 281, 346, 832 |
| Spring | 5 | 281, 346, 832 |
| Richmond-rosenberg | 3 | 281, 346, 832 |
| Sugar Land | 2 | 281, 346, 832 |
| Apollo | 2 | 281, 346, 832 |
| Baytown | 2 | 281, 346, 832 |
| Huffman | 2 | 281, 346, 832 |
| Langham Creek | 2 | 281, 346, 832 |
| Deer Park | 1 | 281, 346, 832 |
FAQ
Where is a 713 number from?
713 is assigned to Houston and surrounding areas of Texas in the Central time zone. The three digits after the area code (the prefix) narrow it down to a rate center.
Is 713 a toll-free number?
No. 713 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.
Why do 281 and 713 cover the same place?
They are overlays: when a code runs low on numbers, a new code is added over the same territory instead of splitting it. The 281/346/621/713/832 complex shares one service area, and local calls are dialed with 10 digits.
Will 713 run out of numbers?
NANPA's current forecast projects exhaust in 2Q 2039 — decades of capacity remain.
Why am I getting spam calls from 713 numbers?
Scammers spoof recognizable area codes so calls look local or familiar. A displayed 713 number does not prove the call originated there — see our guide to spotting spoofed calls.