Source: Thinkstock
6. Colorado
> Largest private company: PCL Construction Enterprises, Inc.
> 2015 revenue: $7.2 billion
> Annual growth rate: 1.7%
> Headquarters: Denver
Source: boehringer-ingelheim.com
7. Connecticut
> Largest private company: Boehringer Ingelheim Corp.
> 2015 revenue: $16.3 billion
> Annual growth rate: 22.6%
> Headquarters: Ridgefield
Source: Wikimedia Commons
8. Delaware
> Largest private company: Burris Logistics
> 2015 revenue: $3.8 billion
> Annual growth rate: 9.0%
> Headquarters: Milford
Source: Wikimedia Commons
9. Florida
> Largest private company: Publix Super Markets Inc.
> 2015 revenue: $30.8 billion
> Annual growth rate: 3.6%
> Headquarters: Lakeland
Source: Thinkstock
10. Georgia
> Largest private company: Georgia-Pacific Corp.
> 2015 revenue: $22.5 billion
> Annual growth rate: 4.5%
> Headquarters: Atlanta
