1. World Map/
  2. North America/
  3. US/
  4. Area Codes/
  5. Area Code 858

Where Is Area Code 858?

Area code 858 is found in the US state of California. Primarily servicing the city of Poway (population: 49169), area code 858 covers 1 county of California.

Located in the Pacific time zone, area code 858 is on the same time as Los Angeles, CA.

Area code 858 was brought into effect on June 12, 1999. 858 was split from the parent 619 area code.

Map of California with area code 858 highlighted

Counties in Area Code 858

  • San Diego.

Most Populous Cities in Area Code 858

City County City Population Time Zone
Poway San Diego 49,169 PST
La Jolla San Diego 48,016 PST
Del Mar San Diego 13,501 PST
Solana Beach San Diego 12,374 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.

Trending on WorldAtlas

This page was last updated on July 3, 2015.