Southern California

Southern California: the places inside it, the companies based here, and where this atlas has research on it.

area · North America · page prepared 2026-11-07

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A

SoCal at a glance

Rolled up from the 15 regions inside SoCal on this site.

Population—
registry estimate
Places inside15
13 with a full /local page
Businesses on file256,763
business register, all places inside
Companies headquartered790
in the company directory
Who represents them9
places with a /politics page
Property & employers9 · 0
/property and /employers records
B

Largest places in SoCal

By registry population; places with a full /local page are marked.

  1. 1.Los Angeles, California full3,870,000
  2. 2.San Diego, California full1,400,000
  3. 3.Long Beach, California full466,742
  4. 4.Irvine, California full318,629
  5. 5.Riverside, California full314,998
  6. 6.San Bernardino, California full222,101
  7. 7.Moreno Valley, California full208,634
  8. 8.Huntington Beach, California full198,711
  9. 9.Pasadena, California full138,699
  10. 10.Santa Monica, California full93,076
  11. 11.Redlands, California73,168
  12. 12.Beverly Hills, California full32,701
  13. 13.El Segundo, California full17,272
R

Inside SoCal

2 regions have SoCal as their parent.

C

Companies based in SoCal

790 companies in the Research Upon directory have their headquarters somewhere in SoCal. Search them by name or industry.

areaAbout this page: figures for the whole of Southern California are rolled up from every region inside it; each place inside has a page of its own, and the companies headquartered here are listed above.