Home › California › 357
357 Area Code
Area code 357 serves Fresno, Visalia, Clovis, Hanford, Lemoore and nearby communities in California. It has been in service since March 26, 2025, when it was split from 559.
Who issues 357 numbers
Share of the 9 prefixes (the three digits after 357) assigned to each type of carrier. Classification by carrier name, approximate.
| Carrier | Prefixes |
|---|---|
| Onvoy (Sinch) | 5 |
| Verizon Wireless | 1 |
| Wide Voice | 1 |
| Opentact | 1 |
| Exiant Communications | 1 |
Cities and towns in area code 357
| City | Population | Other area codes |
|---|---|---|
| Fresno | 555,549 | 559 |
| Visalia | 146,541 | 559 |
| Clovis | 129,347 | 559 |
| Hanford | 62,229 | 559 |
| Lemoore | 27,291 | 559 |
| Sanger | 27,228 | 559 |
| Kingsburg | 13,249 | 559 |
| Firebaugh | 8,774 | 559 |
| Lemoore Station | 5,847 | 559 |
| Old Fig Garden | 5,387 | 559 |
| Mayfair | 5,173 | 559 |
| Sunnyside | 5,003 | 559 |
Got a call from 357?
A 357 number was originally issued in California, but that does not prove the caller is there. 56% of 357 prefixes belong to VoIP and cable providers, whose numbers can be bought online and used from anywhere. Caller ID can also be spoofed, so treat urgent requests for money, codes or passwords from any area code with suspicion, and call back on a number you already know.
All 9 prefixes in area code 357
Format: (357) XXX-YYYY. Carrier is the company the block was originally assigned to; numbers may since have been ported to another carrier.
357-200Verizon Wireless · Lemoore357-222Onvoy (Sinch) · Kingsburg357-333Onvoy (Sinch) · Firebaugh357-357Onvoy (Sinch) · Springville357-444Onvoy (Sinch) · Clovis357-666Onvoy (Sinch) · Sanger357-777Wide Voice · Hanford357-888Opentact · Fresno357-999Exiant Communications · Visalia
Questions about area code 357
- Where is area code 357?
- Area code 357 is in California. It covers Fresno, Visalia, Clovis, Hanford, Lemoore, Sanger and 6 more cities and towns.
- What time zone is area code 357?
- Area code 357 is in the Pacific time zone.
- Is 357 a toll-free number?
- No. 357 is a geographic area code in California. Toll-free numbers in the US start with 800, 833, 844, 855, 866, 877 or 888.
- Why does 357 share its area with 559?
- 357 and 559 form an overlay: they cover the same territory, so new numbers there can get any of these codes, and local calls need all 10 digits.
- Will area code 357 run out of numbers?
- NANPA's latest forecast projects the 357/559 overlay to exhaust in the fourth quarter of 2072. Before that happens, a new area code is usually added as an overlay; existing numbers keep their code.