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Area Code 738 Location & Details

State / Region: California • Country: United States

Major Cities Covered: Los Angeles, Montebello, Commerce, Vernon

Standard Dial Format
+1 (738) XXX-XXXX
Country Code: +1 (NANP Format)
What State is Area Code 738?
CaliforniaState Hub →
Country Territory
United States
738 Area Code Time Zone
Pacific
738 Overlay Codes
213, 323

Area Code 738 Geographic Map

Interactive location bounds and coverage area for California (Pacific Timezone)

Lat: 34.01° • Lng: -118.22°
📍 Geographic Center: CaliforniaMap data © OpenStreetMap contributors

Where is Area Code 738 Located?

Telephone area code 738 is assigned to California in United States. It serves cities and metropolitan communities including Los Angeles, Montebello, Commerce, Vernon.

Historical Context & Area Code Overlay Information:738 serves California (United States).

For local and long-distance calls within area code 738, standard 10-digit dialing (738) XXX-XXXX applies.

Who Called Me from Area Code 738?

Received an unknown call, missed call, or text scam from area code 738? Here is how to trace who is calling from 738 area code and verify unknown numbers safely:

1.
Identify Missed Calls & Voicemails:

Legitimate contacts usually leave a detailed voicemail or caller ID record.

2.
Watch Out for Neighbor Spoofing:

Robocallers often fake incoming caller ID numbers using your local 738 prefix to boost pick-up rates.

3.
Reverse Phone Lookup Area Code 738:

Search public white-pages or use caller intelligence guides before returning unfamiliar calls.

Learn How Reverse Phone Lookups Work→

How to Call Area Code 738 & Dialing Format

When placing a phone call to a number in area code 738, follow the correct dialing format depending on your calling location:

  • Calling from inside the US / Canada (+1): Dial 1 + (738) + 7-digit number.
  • Calling from an international location outside +1: Dial your country's international exit code (e.g. 011 in US or + on mobile) + 1 + 738 + 7-digit number.
  • Do I need to dial area code 738 for local calls? Yes, 10-digit dialing (area code + line number) is mandatory across North American telephone networks.

Top Cities & Municipalities Served in Area Code 738

Urban centers, census places, and communities within the +1-738 calling area

4 Major Cities Listed
City NameCountyPopulation% of 738 Pop
Los AngelesLos Angeles County3,869,08998.2%
MontebelloLos Angeles County60,6931.5%
CommerceLos Angeles County11,6880.3%
VernonLos Angeles County2070.0%

Counties Covered by Area Code 738

Geographic county distribution and population coverage across California

County NameTotal Population% of 738 Area% of County
Los Angeles County9,748,868100.0%40%

☎️Area Code 738 Exchange Prefixes & Carriers

Showing 36 of 36 central office 3-digit prefixes and assigned telecom carriers

58% Landline6% Wireless36% VoIP
PrefixLine UsageRate CenterAssigned CarrierAssign Date
(738) 200-📱WirelessLSAN DA 10T-MOBILE USA, INC.10/24/2025
(738) 201-💻VoIPLSAN DA 07ONVOY, LLC - CA11/04/2025
(738) 202-📱WirelessLSAN DA 04T-MOBILE USA, INC.12/10/2025
(738) 203-💻VoIPLSAN DA 13ONVOY, LLC - CA12/11/2025
(738) 204-💻VoIPLSAN DA 08ONVOY, LLC - CA06/26/2026
(738) 205-💻VoIPLSAN DA 10ONVOY, LLC - CA06/26/2026
(738) 206-💻VoIPLSAN DA 11ONVOY, LLC - CA06/26/2026
(738) 207-💻VoIPLSAN DA 14ONVOY, LLC - CA06/26/2026
(738) 211-📞LandlineCALocal Exchange CarrierN/A
(738) 222-💻VoIPLSAN DA 06ONVOY, LLC - CA12/23/2025
(738) 300-📞LandlineLSAN DA 06OPENTACT INC.06/04/2026
(738) 311-📞LandlineCALocal Exchange CarrierN/A
(738) 333-📞LandlineMONTEBELLOWIDE VOICE, LLC - CA10/03/2025
(738) 411-📞LandlineCALocal Exchange CarrierN/A
(738) 444-💻VoIPLSAN DA 12ONVOY, LLC - CA12/23/2025
(738) 511-📞LandlineCALocal Exchange CarrierN/A
(738) 529-💻VoIPLSAN DA 03ONVOY, LLC - CA12/23/2025
(738) 555-📞LandlineCALocal Exchange CarrierN/A
(738) 611-📞LandlineCALocal Exchange CarrierN/A
(738) 666-💻VoIPMONTEBELLOONVOY, LLC - CA12/23/2025
(738) 700-📞LandlineCALocal Exchange CarrierN/A
(738) 711-📞LandlineCALocal Exchange CarrierN/A
(738) 738-📞LandlineLSAN DA 06EXIANT COMMUNICATIONS LLC03/03/2026
(738) 777-📞LandlineLSAN DA 01WIDE VOICE, LLC - CA09/22/2025
(738) 800-💻VoIPLSAN DA 04ONVOY, LLC - CA12/23/2025
(738) 811-📞LandlineCALocal Exchange CarrierN/A
(738) 880-📞LandlineLSAN DA 018X8, INC.05/20/2026
(738) 888-📞LandlineLSAN DA 06WIDE VOICE, LLC - CA09/08/2025
(738) 900-💻VoIPLSAN DA 05ONVOY, LLC - CA12/23/2025
(738) 911-📞LandlineCALocal Exchange CarrierN/A
(738) 950-📞LandlineCALocal Exchange CarrierN/A
(738) 958-📞LandlineCALocal Exchange CarrierN/A
(738) 959-📞LandlineCALocal Exchange CarrierN/A
(738) 976-📞LandlineCALocal Exchange CarrierN/A
(738) 998-💻VoIPLSAN DA 02ONVOY, LLC - CA05/21/2026
(738) 999-📞LandlineLSAN DA 04WIDE VOICE, LLC - CA09/24/2025

Frequently Asked Questions about Area Code 738

Where is area code 738 located?

Area code 738 is located in California (United States), serving cities like Los Angeles, Montebello, Commerce, Vernon.

What timezone is area code 738?

Area code 738 operates in the Pacific timezone.

What state is area code 738?

Area code 738 is assigned to the state / telecom territory of California.

Is area code 738 a scam or dangerous?

Area code 738 is an official geographic area code for California. However, beware of robocaller spoofing.

California State Area Codes

View complete directory of telephone area codes assigned to California.

Explore California Directory

Get a 738 Business Phone Number

How to acquire a virtual phone number or business line with area code 738 for local customer trust in California.

Get 738 Business Number
🛡️ Scam & Safety Directory

Check high-risk international callback scam area codes and robocall warning databases.

Scam Area Codes 2026

Overlay & Nearby Area Codes for California

Explore neighboring telecom prefixes sharing geographical boundaries with area code 738.

213
Pacific
Area Code 213
Los Angeles, Montebello, Commerce, Vernon
323
Pacific
Area Code 323
Los Angeles, South Gate, Montebello, Huntington Park, Bell Gardens, Commerce, Vernon
209
Pacific
Area Code 209
Stockton, Modesto, Tracy, Merced, Manteca, Turlock, Lodi, Los Banos, Ceres, Lathrop
279
Pacific
Area Code 279
Sacramento, Elk Grove, Roseville, Folsom, Rancho Cordova, Citrus Heights, Rocklin, Lincoln, West Sacramento, Loomis
310
Pacific
Area Code 310
Torrance, Inglewood, Carson, Compton, Santa Monica, South Gate, Hawthorne, Redondo Beach, Lynwood, Gardena
341
Pacific
Area Code 341
Oakland, Fremont, Hayward, Berkeley, Richmond, San Leandro, Milpitas, Alameda, Union City, Newark