California · Pacific Time
747 Area Code
Area code 747 is in California, serving San Fernando Valley, Glendale, Burbank and nearby areas of Los Angeles County. It is in the Pacific Time zone. It shares its territory with overlay code 818, so 10-digit dialing is required.
Last updated October 1, 2026 · Source: NANPA
Where is the 747 area code?
747 is a California area code covering San Fernando Valley, Glendale, Burbank and nearby areas of Los Angeles County. In the wider directory it sits in the West region.
Cities in the 747 area code
- Los Angeles
- Glendale
- Burbank
- San Fernando
- Calabasas
- Agoura Hills
- La Cañada Flintridge
- Hidden Hills
- Westlake Village
Counties served by 747
Los Angeles County.
747 overlay codes and dialing
The 747 territory is covered by an overlay of 2 area codes: 747, 818. All of them serve the same geographic area, and the original code is 818. Because more than one code covers the same ground, 10-digit dialing is mandatory — you must dial the area code for every local call. New phone lines may be assigned any of these codes.
History of the 747 area code
747 went into service on May 18, 2009 as an overlay of 818, relieving number exhaustion in the Los Angeles area. Rather than splitting the region, the overlay lets existing customers keep their numbers while new lines draw from the added code. Learn more in our overlay guide.
Is 747 a scam or spam risk?
747 is a legitimate geographic area code, not a premium or toll line, so a call from it costs you nothing extra. That said, scammers frequently spoof real local area codes to look familiar on caller ID. A genuine 747 number on your screen is no guarantee the caller is in Los Angeles, CA or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Other California area codes
Explore more
See every code in California, compare codes across the West region, or view all Pacific Time codes. You can also browse the 7XX block or the complete numeric list of US area codes.
New to how this all works? Start with how area codes work, then read up on overlays, 10-digit dialing, and spam & scam-risk codes. To check another number, use the area code lookup tool.
Quick answers
747 area code FAQ
Where is the 747 area code?
The 747 area code is in California, covering San Fernando Valley, Glendale, Burbank and nearby areas of Los Angeles County, in the West region.
What cities are in the 747 area code?
Cities in the 747 area code include Los Angeles, Glendale, Burbank, San Fernando, Calabasas, Agoura Hills, La Cañada Flintridge, Hidden Hills and Westlake Village.
What time zone is 747 in?
747 is in the Pacific Time zone.
What is the overlay for the 747 area code?
747 shares its territory with 818. Both codes (747, 818) serve the same area, so 10-digit dialing is required for every call.
When did the 747 area code start?
747 went into service on May 18, 2009 as an overlay of 818.
Do I have to dial 10 digits for 747?
Yes. Because 747 is an overlay area, you must dial the full 10-digit number (area code + 7 digits) for every call.
Is 747 a toll-free or premium code?
No. 747 is a standard geographic area code, so calling it costs the same as any local or long-distance call on your plan. Toll-free calls use 800, 888, 877, 866, 855, 844 or 833.