559 area code — Fresno, CA geographic
- State
- California
- Major area
- Fresno
- Time zone
- Pacific
- In service since
- 1998-11-14
- Split from
- 209
- Overlay complex
- 357 / 559
- Active prefixes
- 774
- Rate centers
- 60
- Carriers
- 45
- Projected exhaust
- 4Q 2072
559 is the area code for Fresno, California, in service since November 14, 1998, Pacific time. It is part of the 357/559 overlay complex — these codes share the same territory. Note that porting and VoIP mean a 559 number can be used from anywhere — the code marks where the number was assigned.
774 central-office prefixes are currently active in this code, spread across 45 code-holding carriers. Thousands-block pooling applies to 609 prefixes, so a single prefix can belong to several carriers. Its prefixes map to 60 distinct rate centers.
Practical takeaway: the 559 label narrows geography to California, the prefix narrows it to a locality, and neither authenticates a caller. Verification means calling back through a number you found yourself.
Dialing: 1+10D locally, 1+10D to other codes (10-digit dialing permissible at wireless providers discretion).
NANPA projects numbering capacity for the 357/559 complex to exhaust in 4Q 2072.
559 was created from 209 in 1998. It has since spawned 357 (2025).
Largest localities in 559
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Fresno | 259 | 209 |
| Visalia | 81 | — |
| Clovis | 40 | — |
| Madera | 34 | — |
| Hanford | 31 | — |
| Porterville | 28 | — |
| Tulare | 24 | — |
| Lemoore | 13 | — |
| Reedley | 13 | — |
| Selma | 12 | — |
FAQ
Why do 357 and 559 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 357/559 complex shares one service area, and local calls are dialed with 10 digits.
Will 559 run out of numbers?
NANPA's current forecast projects exhaust in 4Q 2072 — decades of capacity remain.
Why am I getting spam calls from 559 numbers?
Scammers spoof recognizable area codes so calls look local or familiar. A displayed 559 number does not prove the call originated there — see our guide to spotting spoofed calls.
Where is a 559 number from?
559 is assigned to Fresno and surrounding areas of California in the Pacific time zone. The three digits after the area code (the prefix) narrow it down to a rate center.
Is 559 a toll-free number?
No. 559 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.