Fast-Growing Companies Call These 10 Cities Home

8 of 11

Chicago, 218 companies

This Midwest city boasts the third largest gross metropolitan product after New York and Los Angeles. Known for manufacturing, publishing, and finance, most companies that top the Chicago list come from outside these sectors, including the fastest-growing in the area Red Frog Events. Other companies that got their start in Chi-town: Groupon and Feedburner.