Top 20 Largest Data Centers in the U.S.


The U.S. hosts many of the world’s largest hyperscale and colocation campuses powering AI training, cloud, and enterprise workloads. Rankings below reflect overall campus scale (either total built/announced square footage and/or MW capacity). When a single, well-defined building dominates, it’s called out explicitly.


Rank Facility / Campus Operator Location Size (sq ft) Power (MW) Notes
1 TAHOE RENO (The Citadel) Campus Switch Storey County / Reno, NV Up to ~7.2M (planned) Up to 650 (planned) Switch’s flagship exascale campus; 100% green power.
2 SuperNAP Las Vegas Campus Switch Las Vegas, NV ~3M+ 500+ (campus) Tier-5 design; multiple massive halls.
3 Meta Prineville Campus Meta Prineville, OR ~4.6M (campus) n/a (public data varies) Meta’s largest U.S. campus by floor area.
4 Lakeside Technology Center (350 E Cermak) Digital Realty Chicago, IL ~1.1M (single building) 100+ (utility) Iconic carrier hotel; dense interconnect hub.
5 QTS Atlanta-Metro (DC1+DC2) QTS Atlanta, GA ~970k (DC1) + expansions ~72 (DC2 module) / campus 100+ Former fab; large modular expansions.
6 Equinix Infomart Dallas Campus Equinix Dallas, TX ~1.58M (complex) n/a (public data varies) One of the most connected buildings in the U.S.
7 AWS Cumulus (Susquehanna Nuclear) Campus AWS (acquired from Talen) Luzerne County, PA Campus scale Up to 960 (planned) Nuclear-adjacent, 2.5 GW plant next door.
8 Google Council Bluffs Campus Google Council Bluffs, IA Campus scale n/a (public data varies) One of Google’s largest North American sites.
9 Microsoft Quincy Campus Microsoft Quincy, WA Campus scale n/a (public data varies) Early hyperscale anchor in the Pacific Northwest.
10 Meta Altoona Campus Meta Altoona, IA Campus scale n/a (public data varies) Multi-building expansion; major Midwest node.
11 QTS Richmond (ex-Qimonda) Campus QTS Richmond, VA Campus scale n/a (public data varies) Huge building; East-coast hyperscale capacity.
12 Meta Gallatin AI Campus Meta Gallatin, TN Campus scale (multi-M sq ft, planned) n/a (public data varies) AI-focused build-out; ongoing construction.
13 Google The Dalles Campus Google The Dalles, OR Campus scale n/a (public data varies) Long-running Columbia River cluster.
14 Meta Fort Worth Campus Meta Fort Worth, TX Campus scale n/a (public data varies) Large Texas AI/cloud footprint.
15 Google Moncks Corner Campus Google Berkeley County, SC Campus scale n/a (public data varies) Major Southeast node.
16 Microsoft San Antonio Campus Microsoft San Antonio, TX Campus scale n/a (public data varies) Central U.S. cloud region capacity.
17 QTS Northern Virginia (Manassas/Prince William) QTS Northern Virginia, VA Campus scale n/a (public data varies) NOVA hyperscale cluster adjacency.
18 Digital Realty Ashburn (multiple sites) Digital Realty Ashburn, VA Multi-site n/a (public data varies) Part of the world’s densest DC market.
19 Equinix Ashburn (multiple sites) Equinix Ashburn, VA Multi-site n/a (public data varies) Massive interconnect & cloud on-ramps.
20 Apple Maiden Campus Apple Maiden, NC Campus scale n/a (public data varies) Anchored by early iCloud mega-build.