[legion]

http://www.computerworld.com/action/article.do?command=viewArticleBasic&articleId=9039699&source=NLT_AM&nlid=1

San Jose-Sunnyvale-Santa Clara, Calif. 71,426 8.3%
Washington-Arlington-Alexandria, D.C.-Va.-Md.-W.Va. 170,429 6.1%
Raleigh-Cary, N.C. 27,020 5.3%
Boulder, Colo. 7,925 5.2%
Huntsville, Ala. 9,390 5.2%
Bloomington-Normal, Ill. 4,216 5.0%
Trenton-Ewing, N.J. 8,519 4.8%
Austin-Round Rock, Texas 37,206 4.8%
Manchester-Nashua, N.H. 9,814 4.5%
Seattle-Tacoma-Bellevue, Wash. 75,557 4.5%
Colorado Springs, Colo. 12,511 4.3%
San Francisco-Oakland-Fremont, Calif. 89,989 4.3%

And I can tell you from personal knowledge, there are roughly 8,000 IT jobs in Bloomington/Normal, meaning that the census number of 4,216 is way low.