Area code 357 covers Fresno and surrounding areas in California. It was activated in 2025 as an overlay of area code 559. Today it shares its territory with overlay code 559. For the full picture, see all California area codes.
| State | California |
|---|---|
| Primary city | Fresno |
| Cities also served | Fresno, Visalia, Clovis, Madera, Porterville, Selma, Reedley, Coalinga |
| Time zone | Pacific (UTC-8 / UTC-7 DST) |
| Year established | March 26, 2025 |
| Original 1947 NPA? | No |
| Parent code | 559 |
| Overlay codes | 559 |
| Currently in use? | Yes, actively assigned |
| Ten-digit dialing required? | Yes |
Cities Served by Area Code 357
Area code 357 serves Central San Joaquin Valley — Fresno, Madera, Kings, and Tulare counties, including the following cities and communities:
- Fresno
- Visalia
- Clovis
- Madera
- Porterville
- Selma
- Reedley
- Coalinga
Nearby area codes covering the same broader region include: 559, 209.
How to Get a 357 Phone Number
There are three ways to get a phone number with the 357 area code, each suited to a different need:
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Browse 357 Numbers →- Buy from a premium-number specialist. Companies that hold curated inventories of specific area codes can sell you a 357 number directly, often with a one-time fee and ownership transferred to you (no recurring carrier fees). This is the option for picking a specific memorable number, or for getting an area code that most carriers won’t let you request. Browse our 357 inventory.
- Sign up with a VoIP carrier. Voice-over-IP services (such as Google Voice, OpenPhone, Grasshopper, and many others) can typically provision a 357 number on request, especially for active overlay codes. You won’t usually get to pick the specific number, but you’ll get a working line in the area code. This is the cheapest option for anyone who doesn’t need a particular number.
- Port an existing 357 number. If you already have a 357 phone number with another carrier, you can transfer it (port it) to a new service provider while keeping the number. This works for landlines, cell phones, and VoIP services, though landlines outside of California sometimes can’t accept inbound ports of 357 numbers due to 911 routing rules.
Looking for a 357 number? 212areacode.com offers premium 357 numbers for Fresno, California — choose your number, port it to any carrier in 3–5 business days, and pay a one-time fee with no monthly charges. Browse available 357 numbers →
Frequently Asked Questions
Is the 357 area code still in use?
Yes. 357 is actively assigned to new phone lines in Central San Joaquin Valley — Fresno, Madera, Kings, and Tulare counties.
What is the difference between 357 and 559?
Today they share the same geographic territory in California. New phone lines in the area may be assigned either code. The two codes work identically for calling, billing, and service.
What is the parent area code of 357?
Area code 357 is an overlay of 559. Both codes serve the same region of California.
Can I get a 357 number if I don't live in California?
Yes. Phone numbers are no longer tied to a physical address. With VoIP service or a number broker, you can hold a 357 number from anywhere in the world. The number routes to whatever device or carrier you specify.
Is 357 a scam area code?
No. 357 is a legitimate, active area code for Central San Joaquin Valley — Fresno, Madera, Kings, and Tulare counties. Like any area code, scammers occasionally spoof 357 caller IDs, but the code itself is heavily used by real California businesses, government offices, and residents.
What area does the 357 area code cover?
Area code 357 covers the same territory as the 559 area code: the central San Joaquin Valley in California, including Fresno, Madera, Kings, and Tulare counties and cities such as Fresno, Visalia, Clovis, Madera, and Porterville.
Why was the 357 area code created?
The 559 area code was projected to exhaust its available phone number prefixes by September 2025. The California Public Utilities Commission approved area code 357 as an all-service overlay to provide additional numbering resources without requiring existing customers to change their numbers.
When did area code 357 go into service?
Area code 357 went into service on March 26, 2025. New telephone lines in the region may be assigned 357 numbers; all existing 559 numbers remain unchanged.
Do I need to dial ten digits when calling a 357 number?
Yes. As of February 26, 2025, ten-digit dialing (area code + seven-digit number) is mandatory for all calls — local or otherwise — within the 559/357 overlay region.
