310
Covers Los Angeles metropolitan area
In service since 1991
Split from area code 213
Overlay with 424
City facts
Torrance area codes
Area codes for Los Angeles metropolitan area: history, overlays and how to dial.
310424
Torrance uses area codes 310 and 424. Because more than one area code serves the same area, local calls need all ten digits.
About these area codes
424
Covers Los Angeles metropolitan area
In service since 2006
Overlay with 310
How to call a number in Torrance
Inside the US
1 (310) 555-0123Dial 1, the area code, then the seven-digit number.Local call
(310) 555-0123Overlay area: always include the area code.From outside the US
+1 310 555 0123Use your country's exit code or +, then 1 for the US.Torrance is on Pacific Time (PT); check the time before calling from another zone.
Other cities that share these codes
Nearby area codes
| Area code | Used in | Distance |
|---|---|---|
| 323 | South Gate | 11 mi |
| 562 | Downey | 14 mi |
| 213 | Echo Park | 17 mi |
| 657 | Westminster | 21 mi |
| 714 | Westminster | 21 mi |
| 626 | Alhambra | 22 mi |
| 949 | Santa Ana | 28 mi |
| 909 | West Covina | 28 mi |
Torrance quick facts
Torrance was founded in October 1912 and incorporated on May 12, 1921. It is named for Jared Sidney Torrance.
Founded1912October 1912
Incorporated1921May 12, 1921
CountyLos Angeles CountyCalifornia
Area codes310, 424Population143,499Census ACS estimateZIP codes490501, 90503, 90504…Elevation82 ft25 m
Time zonePacific TimePT
Dates, namesake and elevation from Wikipedia: Torrance, California and Wikidata (checked 2026-11-08); population and ZIP codes from the U.S. Census Bureau.
Questions
What area code is Torrance?
Torrance uses area codes 310 and 424. Because more than one area code serves the same area, local calls need all ten digits.
When did area code 310 start?
Area code 310 dates from 1991, when it was split from area code 213.
When did area code 424 start?
Area code 424 dates from 2006.
Do I need to dial the area code for local calls in Torrance?
Yes. 310 and 424 share the same area as an overlay, so every local call needs the area code plus the seven-digit number (ten digits).
What time zone is area code 310 in?
Torrance is on Pacific Time (PT).
What other cities use area code 310?
Other cities in this network that share 310 and 424 include Carson, Manhattan Beach, Beverly Hills, West Hollywood.
Sources: Area codes 310 and 424, Area codes 310 and 424 (Wikipedia) and Wikidata, checked 2026-11-08. Numbering plans change; the North American Numbering Plan Administrator is the official record.