| Digital Realty 350 E Cermak (ORD10) | Digital Realty | Chicago | Illinois | 350 E Cermak Rd | Premier Midwest carrier hotel & interconnection hub |
| Digital Realty 600 S Federal (ORD11) | Digital Realty | Chicago | Illinois | 600 S Federal St | Downtown enterprise colocation |
| Digital Realty Elk Grove Campus | Digital Realty | Elk Grove Village | Illinois | Busse Rd | 1.1M+ sq ft multi-building campus |
| Digital Realty Franklin Park Campus | Digital Realty | Franklin Park | Illinois | Grand Ave | 500,000+ sq ft, 40-acre campus |
| Digital Realty Northlake | Digital Realty | Northlake | Illinois | N Railroad Ave | Enterprise colocation facility |
| CoreSite CH1 | CoreSite | Chicago | Illinois | 427 S LaSalle St | Downtown carrier hotel |
| CoreSite CH2 | CoreSite | Chicago | Illinois | 1432 S Clinton St | 353,000+ sq ft, 65+ network providers |
| Equinix Cermak Campus | Equinix | Chicago | Illinois | 350 E Cermak Rd | Global interconnection platform |
| Equinix Elk Grove Campus | Equinix | Elk Grove Village | Illinois | Lunt Ave | Carrier-neutral campus near O’Hare |
| NTT Chicago Campus | NTT DATA | Itasca | Illinois | Pierce Rd | 72 MW campus supporting AI & hyperscale |
| CyrusOne CHI5 | CyrusOne | Lombard | Illinois | Springer Dr | Enterprise colocation |
| CyrusOne Aurora III Campus | CyrusOne | Aurora | Illinois | Bilter Rd | Planned 40 MW hyperscale campus |
| Prime Chicago Campus | Prime Data Centers | Elk Grove Village | Illinois | Higgins Rd / Midway Ct | 180 MW hyperscale campus |
| DataBank ORD1 | DataBank | Chicago | Illinois | 600 S Federal St | Downtown carrier hotel |
| DataBank ORD2 | DataBank | Chicago | Illinois | 840 S Canal St | Enterprise colocation |
| DataBank ORD3 | DataBank | Mt. Prospect | Illinois | Business Center Dr | O’Hare enterprise facility |
| DataBank ORD4 | DataBank | Oak Brook | Illinois | Swift Dr | 86,000 sq ft Tier III facility |
| T5 Chicago Campus | T5 Data Centers | Elk Grove Village | Illinois | Innovation Dr | Enterprise campus near O’Hare |
| T5 Chicago III | T5 Data Centers | Northlake | Illinois | Grand Ave | Enterprise expansion |
| T5 Grayslake Campus | T5 Data Centers | Grayslake | Illinois | Alleghany Rd | Planned 480 MW hyperscale campus |
| STACK CHI01 Campus | STACK Infrastructure | Elk Grove Village | Illinois | Touhy Ave | 40 MW campus with 7 on-site carriers |
| STACK CHI02 | STACK Infrastructure | Elk Grove Village | Illinois | Jarvis Ave | Planned 36 MW expansion |
| Stream Chicago Campus | Stream Data Centers | Elk Grove Village | Illinois | Busse Rd / Landmeier Rd | Hyperscale campus with 260 MW planned |
| EdgeConneX Chicago Campus | EdgeConneX | Elk Grove Village | Illinois | Nicholas Blvd / Lunt Ave | Carrier-neutral edge campus |
| CloudHQ ORD Campus | CloudHQ | Mt. Prospect | Illinois | Algonquin Rd | Three-building, 252 MW campus |
| Aligned Chicago Campus | Aligned Data Centers | Northlake | Illinois | Northwest Ave | Hyperscale campus |
| QTS Chicago 1 | QTS | Chicago | Illinois | Ashland Ave | Enterprise & hyperscale colocation |
| Iron Mountain CHI-1 | Iron Mountain | Des Plaines | Illinois | Touhy Ave | Planned 315,000 sq ft, 36 MW facility |
| H5 Data Centers Chicago | H5 Data Centers | Chicago | Illinois | Hastings St | 36 MW enterprise campus |
| TierPoint Chicago West | TierPoint | Franklin Park | Illinois | Grand Ave | DRaaS & managed services |
| TierPoint Chicago Polk | TierPoint | Chicago | Illinois | W Polk St | Downtown carrier hotel |
| Serverfarm CH1 | Serverfarm | Chicago | Illinois | S Canal St | Financial district connectivity |
| Summit Chicago | Summit | Chicago | Illinois | 350 E Cermak Rd | Enterprise colocation |
| ColoCrossing CH1 | ColoCrossing | Elk Grove Village | Illinois | Busse Rd | 2N+1 enterprise facility |
| Cogent Chicago | Cogent | Chicago | Illinois | LaSalle / Jackson / 40th St | Carrier-neutral colocation |
| Hivelocity Chicago | Hivelocity | Chicago | Illinois | Cermak / Wells St | Enterprise colocation |
| Lumen Chicago | Lumen | Chicago Metro | Illinois | Multiple locations | Carrier-neutral enterprise facilities |
| Element Critical Chicago | Element Critical | Wood Dale | Illinois | Edgewood Ave | Hybrid infrastructure |
| Metro Edge IMD1 | Metro Edge | Chicago | Illinois | Hastings St | Illinois Medical District |
| Skybox Chicago I | Skybox Datacenters | Elk Grove Village | Illinois | Devon Ave | 10-acre campus |
| HydraVault | HydraVault | Chicago | Illinois | Wabash Ave | AI & HPC optimized |
| GigeNET | GigeNET | Arlington Heights | Illinois | Algonquin Rd | Enterprise hosting & colocation |
| Microsoft Elk Grove Campus | Microsoft | Elk Grove Village | Illinois | Innovation Dr | Hyperscale cloud campus |
| Microsoft Hoffman Estates Campus | Microsoft | Hoffman Estates | Illinois | Lakewood Blvd | Multi-building campus |
| Microsoft Northlake | Microsoft | Northlake | Illinois | Northwest Ave | Azure region infrastructure |
| Meta DeKalb Campus | Meta | DeKalb | Illinois | Metaverse Way | Large hyperscale AI campus |
| Compass Hoffman Estates | Compass Datacenters | Hoffman Estates | Illinois | Beverly Rd | Former Sears HQ hyperscale campus |
| Edged Chicago Campus | Edged Energy | Aurora | Illinois | Bilter Rd | Sustainable AI-ready campus |
| Connect Chicago | Oppidan | Carol Stream | Illinois | Kehoe Blvd | 90,000 sq ft facility |
| Related Digital Campus | Related Digital | Chicago | Illinois | Lake Shore Dr | Planned 1 GW hyperscale campus |
| Hillwood Joliet Technology Center | Hillwood / PowerHouse | Joliet | Illinois | Rowell Rd | Planned 1.8 GW hyperscale campus |
| Morris Technology Park | Tract | Morris | Illinois | US-6 | Planned 1 GW campus |
| KARIS Hoffman Estates | KARIS Critical | Hoffman Estates | Illinois | Higgins Rd | Proposed hyperscale campus |
| KARIS DeKalb Campus | KARIS Critical | DeKalb | Illinois | Gurler Rd | Seven-building development |