With 95 companies actually located in Chicago, the Second City has achieved 2nd place in the Inc. 5000. (Inc. puts them 4th by including the surrounding areas in its calculation but as an actual City resident, I like to keep things within city limits.) See my List By City to find out where your city ranks.
Breakdown of the numbers by industry, company size, and much much more.
Chicago:
95 Companies
38595% Growth
$4259.8M Revenue
Illinois
238 Companies
88300% Growth
$13459.7M Revenue
The Chicago List
107Insureon
200Protein Bar
414KTA
441RIPT Apparel
653George Street Photo & Video
660JumpForward
690Mediafly
724ContextMedia
747Riders Needs
848NTP Wireless
933Lifes2Good
1006Brad's Deals
1018Gorilla Commerce
1042Merge Design & Interactive
1081CityTech
1169Culture Studio
1217Red Frog Events
1265Productive Edge
1313Devbridge Group
1560Walker Sands
1655Clarity Partners
1868Coyote Logistics
1870No Limit Agency
200350,000feet
2009Envisionit Media
2037Plum Tree Group
2175Meatheads
2297Sunset Healthcare Solutions
2299Mad Style
2325Be Found Online
2457Guaranteed Rate
2498@Properties
2513Doejo
2523CDM Media
2691National Collegiate Scouting Association
2709Sakonent
2712Table XI
2774SingleHop
2809Caxy Interactive
2834AgencyEA
2849Galen Healthcare Solutions
2859Solstice Mobile
2920Addison Search
3118Telular
3132Aspex Solutions
3159TRIS3CT
3579VSA Partners
3672ServerCentral
3706Strata Decision Technology
3769Avondale Strategic Partners
3816ConsumerBase
3834Bayforce
3954Ahead
4019LaSalle Network
4251OpinionLab
4516Hirewell
4528Nitel
4540Sonoma Partners
4688HY Connect
4805rEvolution