The 357 area code covers the same area as 559, including Fresno, Visalia and 52 more places in California.

357 has been in service since 2025, on Pacific Time. 559 covers the same area, so two neighbours can have different area codes.

Where: 5 counties in California, mostly Fresno County, Tulare County and Kings County
Time zone: Pacific Time
In service since: 2025
Shares its area with: 559 (since 1998)
Prefixes in use: 7
How to dial: Local calls need 1, then the area code, then the number: 1-357-555-0142.

Find out who called you from a 357 number.

Enter the full 10-digit number to see who it is listed to, where it is registered, and whether it is a mobile, landline or VoIP line.

Kingsburg holds 14% of the phone prefixes in area code 357.

A prefix is the three digits after the area code, and NANPA assigns each one to a town. Counting the 7 prefixes in use shows where 357 numbers are actually given out.

Kingsburg1 prefix, 14%
Firebaugh1 prefix, 14%
Clovis1 prefix, 14%
Sanger1 prefix, 14%
Hanford1 prefix, 14%
Fresno1 prefix, 14%
Visalia1 prefix, 14%

One dot per US area code; 357 is the ringed one.

Also served: Reedley, Dinuba, Selma and Chowchilla and 42 smaller places.

357 started in 2025 as an overlay on 559, and its ground has not changed since.

2025
357 starts as an overlay on 559: new numbers on the same ground.

A 357 number on your screen can still be a scam, because caller ID is easy to fake.

Let an unknown call go to voicemail. A real caller leaves a message; a robocaller usually does not.
Look the number up with the box above before you call back, because calling back tells a robocaller your line is live.
Hang up on anyone who wants gift cards, crypto or a wire transfer, or asks you to read out a code that was just texted to you.
Report unwanted robocalls at reportfraud.ftc.gov, or paste a suspicious message into our free scam checker.

These are the questions people ask most about area code 357.

Where is area code 357?

357 covers Fresno, Visalia, Clovis and Madera and 50 more places in California, in Fresno County, Tulare County and Kings County.

What time zone is area code 357 in?

357 is on Pacific Time.

Is 357 the same area as 559?

Yes. 559 (since 1998) covers the same ground as 357. Nobody's number changed when it was added; new lines simply get whichever code has numbers left, so two neighbours can have different codes.

How do I dial a 357 number?

Local calls need 1, then the area code, then the number: 1-357-555-0142.

Who called me from a 357 number?

Enter the full 10-digit number in the lookup above. It returns the listed owner where there is a public record, where the number is registered, and whether it is a mobile, a landline or a VoIP line.

Is area code 357 a scam?

357 is a real California area code, so the code itself is not a warning sign. Scam callers fake local-looking numbers on purpose, so judge the call by what the caller asks for, and look the number up before calling back.

Source: NANPA, the North American Numbering Plan Administrator: its area code database and prefix assignments, as of October 1, 2026.