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Illinois data centers:37 sites, 1.2 GW operating.

As of 20 October 2026, Real Assets tracks 37 data center sites in Illinois, 4% of the 864 tracked in the United States. Power capacity: 1.2 GW operating, 11.2 GW planned or under construction (reported for 23 of 37 sites). Most sites: Digital Realty (9), CyrusOne (7), CloudHQ (2).

Unlock all 37 Illinois sites
37sites tracked in Illinois
4%of United States sites tracked
17named operators
1.2 GWpower capacity operating

Top operators in Illinois

States compared

Full market dataset & site-level records

Unlock all 37 data center sites and 17 operators in Illinois

This page previews the top 3 operators in Illinois. Sign in or start a trial to view all 37 individual facilities in Illinois, exact locations, capacity figures, and source links.

  • Every individual site on the interactive map with coordinates
  • Operating vs. pipeline capacity, operator and owner records
  • Sourced M&A, lease and financing transactions
  • Direct link to the filing, report or news page behind every figure
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How this data is built

Real Assets reads company pages, filings, news and listings, and records figures with a link to the page that published them.

Counts are sites Real Assets has recorded, not a full census, and grow as coverage grows. Sites are listed with the operator as published (the owner for industrial parks). Data updated 20 October 2026.

How this data is built and what a source line means

Questions

How many data center sites are in Illinois?

37 as of 20 October 2026, 4% of the 864 tracked in the United States. This is what we have recorded, not a full census.

Who has the most data center sites in Illinois?

By sites tracked: Digital Realty (9), CyrusOne (7), CloudHQ (2).

How much power capacity is there in Illinois?

Power capacity: 1.2 GW operating, 11.2 GW planned or under construction (reported for 23 of 37 sites).

How does Illinois compare with other states?

Illinois ranks number 6 of the 15 largest states by sites tracked. The largest is Texas with 164.

Where does the data come from?

Figures link to the page that published them. Publishers behind this market's data include Epoch AI, Data Center Dynamics, Baxtel, SemiAnalysis, CyrusOne.

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This page is the summary. The workspace has the full list, the map, the deals and the sources behind each figure.

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