Largest Data Center Companies In The US 2025: Best Insights

Largest data center companies in the US

The United States stands at the core of the global digital infrastructure revolution, hosting some of the world’s largest and most advanced data centers. Driven by exponential growth in cloud computing, AI workloads, and digital services, the U.S. data center market is witnessing unprecedented expansion. Industry leaders such as Equinix, Digital Realty, CyrusOne, CoreSite, and QTS Data Centers are spearheading this transformation, collectively managing gigawatts of IT capacity across hyperscale and colocation campuses. These Top data center companies in the US not only enable the seamless operation of global cloud providers and enterprise networks but also represent critical nodes in the evolving AI and 5G ecosystem.

Top data center companies in the US

Top data center companies in the US	Segment	Notable US Locations/Footprint	Details
Amazon Web Services (AWS)	Hyperscale	Virginia, Ohio, Oregon, California	Largest US footprint, multiple zones
Microsoft Azure	Hyperscale	Virginia, Texas, Iowa, Arizona	Multi-region, strong enterprise base
Google	Hyperscale	Iowa, South Carolina, Georgia, Oregon	AI-optimized, sustainable design
Meta	Hyperscale	Iowa, Nebraska, Alabama, Utah	Multiple US campuses
Equinix	Colocation	Over 90 US sites, major metros	Largest US colocation network
Digital Realty (Interxion)	Colocation	100+ US data centers nationwide	100+ data centers nationwide
CyrusOne	Colocation	Texas, Virginia, Midwest	Enterprise, rapid expansion
CoreSite (American Tower)	Colocation	LA, NY, Chicago, Denver, Miami	Dense urban interconnect, 25+ US sites
Iron Mountain	Specialty	Pennsylvania, Massachusetts, Arizona	Secure archival & compliance facilities
Switch	Colocation	Nevada, Michigan, Georgia	Tier 5, ultra-secure, Nevada/Michigan sites
NTT Global Data Centers	Colocation	California, Virginia, Illinois	Major US and global carrier-neutral sites
QTS Realty Trust	Colocation	Virginia, Georgia, Texas, Illinois	Large campuses, strong hybrid cloud
Cologix	Colocation	Denver, Columbus, Dallas	40 hubs, 12 US markets
CoreWeave	AI/Hyperscale	National expansion, GPU-focused	Rapid AI-optimized data center rollouts
Aligned Data Centers	Colocation	Texas, Utah, Virginia, Illinois	Scalable, flexible infrastructure
NetApp	Storage	Nationwide cloud/data center presence	Enterprise-grade, cloud-integrated services
Oracle Cloud Infrastructure	Hyperscale	Multiple US zones	Enterprise & cloud workloads
GDS Holdings	Colocation	Strategic US locations	Expanding North America footprint
Telehouse	Colocation	New York, LA	NY, LA, international network
EdgeConneX	Edge/Colo	National US footprint	National edge campus portfolio
Digital Fortress	Colocation	Seattle, Dallas, Portland	Seattle, Portland, Dallas, Austin
Three Sixty Five Data Centers	Colocation	East Coast, West Coast	Regional provider, East/West coasts
DataBank	Colocation	Dallas, Atlanta, KC, Pittsburgh	20 markets, hybrid IT
Flexential	Colocation	Charlotte, Denver, Oregon	Charlotte, Denver, hybrid/cloud
Expedient	Colocation	Midwest, East Coast	Midwest/East Coast, hybrid
INAP	Colocation	Atlanta, New York, LA	Atlanta, New York, LA
Evoque Data Centers	Colocation	Nationwide US asset pool	National footprint, enterprise focus
Global Switch	Colocation	North American flagship sites	US-based flagship sites
Cyxtera	Colocation	Miami, Dallas, Phoenix	Carrier-neutral, Miami, Dallas, Phoenix
American Tower	Colocation	Owns CoreSite	Owns CoreSite

Data Center Related Articles

Hyperscale Data Center companies in the US and their Capacity

Company	Current US Capacity (MW)	Planned US Capacity 2030 (MW)
Amazon Web Services (AWS)	Estimated 3,500 MW operational capacity across US regions	Plans to increase by 2,000+ MW through 2030 with sustainability focus
Microsoft Azure	Estimated 2,000 – 2,500 MW (approximate)	Plans to add about 1,500 MW by 2030, focusing on AI workloads and sustainability
Google Cloud	Estimated 2,000 – 2,500 MW (2025)	Planned 1,500+ MW new for AI and cloud by 2030 (targeting ~4,000 MW total capacity)
Meta Platforms	~1,800 MW (2025, operational and committed)	2,000 MW at Louisiana (Hyperion) + ~1,500 MW at Ohio (Prometheus) + additional expansion; estimates point to 5,000 MW total by 2030

AWS Hyperscale Data Center

AWS operates dozens of data centers in multiple US regions, with an estimated total power capacity around 3,500 MW as per recent infrastructure disclosures and market reports.
AWS continues to expand rapidly to meet AI and cloud computing demand, announcing plans to add over 2,000 MW of new capacity by 2030, with strong emphasis on renewable energy integration and carbon-neutral goals.

Microsoft (Meta) Hyperscale Data Center

Microsoft operates numerous hyperscale data centers across US regions, with industry estimates placing current US capacity around 2,000 to 2,500 MW.
Recent investments indicate they plan to expand capacity by roughly 1,500 MW by 2030, driven by AI and cloud growth, with strong commitments to renewable power and carbon neutrality.
Meta currently operates a US data center fleet with an estimated 1,800 MW in installed and soon-to-be-commissioned capacity, supported by large clean energy deals and operational expansion.
Louisiana’s Hyperion campus is expected to add up to 2 GW (2,000 MW) at full build-out by 2030, with the Prometheus campus in Ohio targeting another 1.5 GW (1,500 MW) of AI supercluster capacity.
With the addition of ongoing traditional facility expansions and incremental upgrades at other US campuses, Meta’s total US data center footprint may approach 5 GW (5,000 MW) by the end of the decade, making it one of the largest in North America.

Google Hyperscale Data Center

Google operates some of the largest and most advanced data center campuses in the US (Council Bluffs IA, The Dalles OR, Atlanta GA, Moncks Corner SC, etc.), with multiple key sites exceeding 100 MW each.
Google has committed to extensive new builds, including large clusters dedicated to AI, with plans to increase US capacity by at least 1,500 MW before 2030, aiming for ~4 GW total. These expansions are linked to round-the-clock renewable energy and direct grid investments.

Largest data center companies in the US

Below are a few of the top Data Center Companies in the US that are having the largest capacity in terms of MW.

Switch

The Tahoe Reno (“The Citadel”) Campus in Northern Nevada is designed for up to ~650 MW of power and ~7.2 million square feet.
As of one investor presentation, Switch’s U.S. operational power capacity (across its campuses) is ~455 MW, with plans (future) to expand to ~730 MW total U.S. capacity.
The “Rock” campus in Texas is planned to reach ~185 MW of power and >2 million square feet once complete.

CyrusOne

As of end-2020, CyrusOne’s portfolio (global / U.S.) included ~874 MW of power capacity across 55 data centers and ~8.0 million gross square feet.
Specific campus: Houston dual campus HOU3-HOU4 has ~91 MW of critical IT load.
Another: Austin AUS2 + AUS3 provide ~33 MW IT capacity.
A new project: In Bosque County, Texas, CyrusOne has signed for 190 MW for a planned hyperscale data center (DFW10) to be operational Q4 2026.

QTS Realty Trust

~6 million square feet of mega-scale data center space in the U.S., and ~670 MW of available utility power.

CoreSite (American Tower)

Owns/operates 30 data centers across 11 U.S. markets, totaling ~4.5 million square feet of data center space.
A recent expansion (SV9 in Santa Clara) adds ~34 MW of IT load.

Digital Realty

Active “buildable IT capacity” globally is very large; e.g., via a JV with Blackstone they plan ~500 MW of IT load across several metro areas in Europe and N.A.
Also, the company has achieved >1 GW (1000 MW) of U.S./global IT capacity certified under sustainable building programmes.

Equinix

Equinix has 725 MW to 1000 MW of data center capacity in the US.
In October 2024, Equinix signed a US$15+ billion JV (with GIC and CPP Investments) to expand its U.S. xScale data center portfolio, which is aimed at hyperscale customers.
The plan is to build out more than 1.5 gigawatts (GW) of new capacity (i.e. power) in the U.S. over time.

Data center construction companies in USA

Below are a few Data center construction companies in USA. Please comment if you want the profiles of these companies separately.

Data center construction companies	Type	Known For
DPR Construction	General Contractor	Major hyperscale builder (Meta, Google, Microsoft)
Turner Construction	General Contractor	Builds for AWS, Equinix, and QTS
HITT Contracting	Design-Build	Partner to Digital Realty, CoreSite
AECOM	Engineering/Design	Global data center engineering and EPC work
Fortis Construction	Specialist Contractor	Works with Google and NTT
JE Dunn Construction	General Contractor	Hyperscale and enterprise builds
Clune Construction	Design-Build	Retrofit and tenant data center builds
Brasfield & Gorrie	General Contractor	Regional data center builds
Skanska USA	General Contractor	Large-scale data centers, especially East Coast
Holder Construction	EPC	Partnered with Meta and AWS projects

Outlook on Top Data Center Companies in the US

Top Data Center Companies in the US is set to strengthen as digital infrastructure becomes the backbone of every major industry. With cloud, AI, and edge computing driving exponential data growth, operators are scaling capacity, integrating renewable energy solutions, and adopting modular, high-density designs to meet next-generation demand.

Companies like Equinix and Digital Realty are expanding through both organic development and strategic acquisitions, while others such as CyrusOne and QTS are investing heavily in hyperscale-ready campuses. As the industry evolves, partnerships between operators, real estate investors, and energy providers will shape the next phase of capacity growth. In the coming decade, the U.S. data center market is poised not only to maintain its global leadership but also to redefine the standards for sustainability, scalability, and digital resilience.