738 area code
Area code 738 is in California. It covers Los Angeles, Huntington Park, Pacific Palisades and 2 other places: 97 ZIP codes in Los Angeles County. Local time there is , Pacific Time. In service since 2024 as an overlay: it covers the same area as 213 and 323, so a number from there can have any of them.
- State
- California
- Time zone
- Pacific
- Largest city
- Los Angeles
- In service since
- 2024
- Rate centres
- 15
- Prefixes assigned
- 29 (290,000 numbers)
Who calls from a 738 number
NANPA records the carrier each block of 738 numbers is assigned to. Of the 214,000 738 numbers assigned, 88% are with cable, internet-calling, business and other carriers (Onvoy, Wide Voice and Bandwidth); 12% with mobile carriers (AT&T Mobility and Verizon Wireless).
That is who the numbers were assigned to: people keep their number when they change carrier, so any one number may have moved since.
| Carrier | Kind | Share |
|---|---|---|
| Onvoy | Cable, VoIP, other | 63% |
| Wide Voice | Cable, VoIP, other | 10% |
| Bandwidth | Cable, VoIP, other | 9% |
| AT&T Mobility | Mobile | 7% |
| Verizon Wireless | Mobile | 4% |
| Exiant Communications | Cable, VoIP, other | 3% |
An area code says where a number was issued, not where the caller is: people keep their numbers when they move, and caller ID can be set to show any number, which the FCC calls spoofing. If a call you did not expect asks for money or personal details, the FCC advises hanging up and calling the company back on a number you look up yourself. Unwanted calls can be reported to the FTC at ReportFraud.ftc.gov.
Places in area code 738
The 1 place with a telephone rate centre of its own using 738, largest first. Each links to its ZIP codes.
| Place | ZIP codes | Population |
|---|---|---|
| Los Angeles, CA | 94 | 3,857,263 |
Nearby places using 738
These places have no rate centre of their own in NANPA's records; the nearest one uses 738. Near an area-code boundary that can be wrong for part of a town.
ZIP codes in area code 738
97 ZIP codes in 4 towns, by the town each is mailed to, largest first. Each links to its own page.
- Los Angeles
- 90001, 90002, 90003, 90004, 90005, 90006, 90007, 90008, 90009, 90010, 90011, 90012, 90013, 90014, 90015, 90016, 90017, 90018, 90019, 90020, 90021, 90022, 90023, 90024, 90025, 90026, 90027, 90028, 90029, 90030, 90031, 90032, 90033, 90034, 90035, 90036, 90037, 90038, 90039, 90040, 90041, 90042, 90043, 90044, 90045, 90046, 90047, 90048, 90049, 90050, 90051, 90052, 90053, 90054, 90055, 90056, 90057, 90058, 90059, 90060, 90061, 90062, 90063, 90064, 90065, 90066, 90067, 90068, 90070, 90071, 90072, 90073, 90074, 90075, 90076, 90077, 90078, 90079, 90080, 90081, 90082, 90083, 90084, 90086, 90087, 90088, 90089, 90091, 90093, 90095, 90096, 90099, 90134, 90189
Where 738 numbers are issued
NANPA's rate centres with the most 738 prefixes (each prefix is 10,000 numbers), under NANPA's own abbreviated names.
| Rate centre | Place | Prefixes |
|---|---|---|
LSAN DA 06 | Los Angeles | 4 |
LSAN DA 04 | Los Angeles | 3 |
LSAN DA 01 | Los Angeles | 2 |
LSAN DA 02 | Los Angeles | 2 |
LSAN DA 08 | Los Angeles | 2 |
LSAN DA 09 | Los Angeles | 2 |
Counties
The counties of its ZIP codes, most residents first, with how many of its ZIP codes each has.
Which code covers where you are now? What area code am I in? answers from your location.
Questions about area code 738
Where is area code 738?
Area code 738 is in California. It covers Los Angeles, Huntington Park, Pacific Palisades and 2 other places: 97 ZIP codes in Los Angeles County.
What ZIP codes are in area code 738?
97 ZIP codes, by the town each is mailed to: Los Angeles (94, 90001 to 90189), Huntington Park (90255), Pacific Palisades (90272), Dodgertown (90090). The full list is on this page.
What time zone is area code 738 in?
Pacific time.
Is a 738 number a mobile or a landline?
It can be either. 12% of 738 numbers are assigned to mobile carriers and 0% to local phone companies (NANPA, 2026-10-10); the rest are with cable, internet-calling, business and paging carriers. A number keeps its area code when it moves to another carrier.
What area codes overlay 738?
213 and 323. They cover the same area as 738, so a new number there can be given any of them.
Does a 738 number mean the caller is in California?
Not necessarily. An area code says where the number was first issued. People keep their numbers when they move or switch carriers, and calling software can show any number, so a 738 call can come from anywhere.
Other area codes in California
- 209 Fresno
- 213 Los Angeles
- 279 Sacramento
- 310 Torrance
- 323 Los Angeles
- 341 Oakland
- 350 Stockton
- 357 Fresno
- 369 Santa Rosa
- 408 San Jose
- 415 San Francisco
- 424 Torrance
- 442 Oceanside
- 510 Oakland
- 530 Chico
- 559 Fresno
- 562 Long Beach
- 619 San Diego
- 626 Pasadena
- 628 San Francisco
- 650 San Mateo
- 657 Anaheim
- 661 Bakersfield
- 669 San Jose
- 707 Santa Rosa
- 714 Anaheim
- 747 Glendale
- 760 Oceanside
- 805 Bakersfield
- 818 Glendale
- 820 Oxnard
- 831 Salinas
- 837 Chico
- 840 Fontana
- 858 San Diego
- 909 Fontana
- 916 Sacramento
- 925 Concord
- 949 Irvine
- 951 Riverside
All 41 California area codes, by area, with the cities each covers
Source: NANPA NPA database, central office code and thousands-block assignments, 2026-10-10. Places are matched to NANPA's rate centres by name; see sources.
Cite this page
zipcodes.pro. “Area code 738.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/area-code/738
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