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Data center campus · Northlake (601 Northwest Ave.), Cook County, Illinois

Microsoft Chicago data center, Northlake

Operating as of July 20, 2009

Microsoft's container-based Chicago-area data center, operating in Northlake since 2009 and holding Illinois EPA air and water permits.

Cite← Illinois data centers
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Power30MW reported · stated
Floor area700,000sq ft

Who is behind it

ProjectMicrosoft Chicago data center, Northlake
Developer and teamMicrosoft
End userMicrosoft

The record, newest first

  1. Illinois EPA lists final air permit and NPDES permit files for the Microsoft Chicago Data Center at 601 Northwest Ave. (Illinois Environmental Protection Agency, Oct. 22, 2026)

  2. The 700,000 sq ft facility began operations; Microsoft showed it to media and local officials that September. (Data Center Knowledge, Sept. 30, 2009)

  3. Reporting described Microsoft's planned Northlake project with a 40 MW power feed expandable to 60 MW. (Data Center Knowledge, Nov. 8, 2007)

Conflicts and open questions

  • Square footage reported from 430,000 to 700,000 depending on source and date.
  • Coordinates approximate, from the street address.

The full record

Power note
Total capacity stated at opening in 2009; a 2007 developer spec sheet cited a 40 MW feed expandable to 60 MW.
Evidence
Primary public records
Size class
Under 50 MW (outside main scope; kept for completeness)
Map position approximate, from the reported address or area. Updated Oct. 17, 2026.