Area code 323 was brought into effect on June 13, 1998. 323 was split from the parent 213 area code.
Counties in Area Code 323
- Los Angeles.
Most Populous Cities in Area Code 323
|City||County||City Population||Time Zone|
|Los Angeles||Los Angeles||2,413,343||PST|
|Bell Gardens||Los Angeles||102,766||PST|
|South Gate||Los Angeles||95,782||PST|
|Huntington Park||Los Angeles||76,168||PST|
|West Hollywood||Los Angeles||20,783||PST|
Note: The above list is based off of the top 25 most populous cities in the area code as per 2012 United States Census Bureau estimates.
View all United States Area Codes.