I'll suggest a dark horse candidate: Indianapolis. Indy is close to two top 5 engineering colleges (UIUC and Purdue) and one top 10 business school (IU). Purdue has a unique product history with Amazon [1] and Amazon has four warehouses within an hour drive (though to be fair, that's true of a lot of cities). The city has seen major investment from outside tech companies like Salesforce [2], IAC [3], and others in recent years. Real estate and cost of living inside the city is ridiculously cheap, and there are hundreds of undeveloped acres [4] startlingly close to city center. The city has proven itself capable of hosting 400,000 people in a single day at the Indy500 every year. The state and city has a history of giving large tax incentives to outside tech companies [5].
[1] https://www.purdue.edu/newsroom/releases/2014/Q3/purdue,-ama...
[2] http://www.indystar.com/story/opinion/2017/05/20/why-salesfo...
[3] https://www.bloomberg.com/news/articles/2017-05-01/iac-to-ac...
[4] http://www.indystar.com/story/money/2017/05/02/550m-gm-stamp...
[5] https://www.ibj.com/articles/58486-salesforce-to-invest-40m-...