3. Los Angeles, Calif.
Who launched here?: ShoeDazzle, Factual, Omaze, Beachmint
Average entrepreneur age: 32.6
Average work hours per day: 9.6

The enormous shadow of Hollywood and the entertainment industry has made it challenging for L.A. startups to gain traction, but that is quickly falling by the wayside. L.A. ranked third on Startup Genome's list in terms of entrepreneurial talent, and the city's high visibility on the West Coast certainly doesn't hurt. A hefty portion of L.A. startup founders (29%) once contributed to its neighboring startup scene to the north.

  @FortuneMagazine - Last updated November 27 2012 10:17 AM ET
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