However, it was interesting to note that Number 1 on the list was ReachLocal , the Woodland Hills-based provider of local search advertising services — topping the list with 146,050% growth over 5 years. Aside from ReachLocal, I see The Search Agency (SEO services, #83), Hydra (Internet ads, 87), Gorilla Nation at 243, and Oversee.net at 326. Perusing the Deloitte Technology Fast 500 list for this year — the ranking of the fastest growing companies in North America , based on the last five years of revenue–it’s quite surprising to note the sheer number of Southern California firms listed.

San Diego-based MedVantx ranked at number 13 on the list; Woodland Hills-based ReachLocal was 39; San Diego-based BridgePoint Education was 50; Santa Monica-based International Checkout ranked at 61; Torrance-based Flipswap at 81; and Irvine-based ClinAssure was at 85. Beyond the first 100 companies, medical imaging firm Dicom Solutions in Irvine was at 109; Agoura Hills-based SEO provider National Positions at 112; Blackline Systems in Calabasas was at number 113, and at number 134, Irvine-based Vizio . A number of Southern California technology firms have nabbed top spots in the annual Inc.