How many data centers are in the U.S.?

Why there is no single number

"Data center" covers everything from a server room to a gigawatt campus. The Congressional Research Service defines a hyperscale data center by thresholds (at least 5,000 servers, 10,000 square feet and more than 100 MW)[3], and there is no equivalent official definition or count for smaller colocation and enterprise facilities. The Census Bureau measures the industry by its workforce instead: it reports that data center employment grew from 306,000 in 2016 to 501,000 in 2023[2].

Hyperscale data centers

Synergy Research Group, an industry analyst, tracks the large data centers run by 19 major cloud and internet companies. It counted 1,136 worldwide at the end of 2024[4] and 1,297 in its Q3 2025 data, noting the U.S. accounts for 55% of worldwide hyperscale operating capacity[1]. That 55% is a share of capacity, not a count of buildings.

AI data centers

There is no official count of "AI data centers." What is documented is scale: the IEA says a hyperscale, AI-focused data center can be 100 MW or more[5], and federal policy defines a qualifying AI data center project as needing more than 100 MW of new load[6]. A better measure than the number of buildings is electricity: U.S. data centers used 176 TWh in 2023, 4.4% of U.S. electricity[7], and 192 TWh in 2024, 4.7%[8].

What the Census counts

The Data Center Census does not try to count every server room. It tracks major U.S. projects, from first proposal to operation, and records each one's status, size and sources. That makes it a count of projects in play rather than a count of buildings.

Common questions

How many data centers are in the United States?

No federal agency publishes an official count of data center buildings, and online estimates vary with the definition used. Industry analyst Synergy Research reports the U.S. holds 55% of worldwide hyperscale operating capacity, out of 1,297 hyperscale facilities worldwide in late 2025.

How many AI data centers are in the U.S.?

There is no official count of AI data centers. Federal policy defines a qualifying AI data center project as one needing more than 100 MW of new load; the Data Center Census tracks major projects individually, with their published capacity.

How many people work in data centers?

The Census Bureau, citing BLS data, reports that the number of people working in data centers grew from 306,000 in 2016 to 501,000 in 2023.

Sources

1. Hyperscale Spending Spree is Driving Dramatic Growth in Data Center Capacity
   Synergy Research Group · 2025-12-19
   Source excerpt

   “New Q3 data from Synergy Research Group shows that the number of large data centers operated by hyperscale providers has climbed to 1,297 worldwide, nearly tripling since early 2018. ... The US now accounts for 55% of worldwide hyperscale operational capacity, up from 52% three years ago”

2. Employment in Data Centers Increased by More Than 60% From 2016 to 2023 But Growth Was Uneven Across the United States
   U.S. Census Bureau · 2025-01-06
   Source excerpt

   “The number of people working in data centers grew from 306,000 to 501,000 between 2016 and 2023, according to the Bureau of Labor Statistics.”

3. Data Centers and Their Energy Consumption: Frequently Asked Questions (CRS R48646)
   Congressional Research Service (text via EveryCRSReport.com) · 2026-05-12
   Source excerpt

   “To be considered a hyperscale data center, a facility should contain at least 5,000 computer servers and a large scale of network equipment and occupy at least 10,000 square feet of physical space, with an electric power rating, sometimes referred to as power draw, exceeding 100 megawatts (MW).”

4. Hyperscale Data Center Count Hits 1,136; Average Size Increases; US Accounts for 54% of Total Capacity
   Synergy Research Group · 2025-03-19
   Source excerpt

   “the number of large data centers operated by hyperscale providers increased to 1,136 at the end of 2024”

5. Understanding the energy-AI nexus – Energy and AI
   International Energy Agency · 2025-04-10
   Source excerpt

   “A hyperscale, AI-focused data centre can have a capacity of 100 MW or more, consuming as much electricity annually as 100 000 households.”

6. Accelerating Federal Permitting of Data Center Infrastructure
   The White House · 2025-07-23
   Source excerpt

   “a facility that requires greater than 100 megawatts (MW) of new load dedicated to AI inference, training, simulation, or synthetic data generation. ... a Data Center Project or Covered Component Project for which the Project Sponsor has committed at least $500 million in capital expenditures as determined by the Secretary of Commerce”

7. 2024 United States Data Center Energy Usage Report
   Lawrence Berkeley National Laboratory · 2024-12-20
   Source excerpt

   “U.S. data center energy use has continued to grow at an increasing rate, reaching 176 TWh by 2023, representing 4.4% of total U.S. electricity consumption.”

8. United States Data Center Energy Usage Report: 2025 Update
   Lawrence Berkeley National Laboratory · 2026-06
   Source excerpt

   “The updated estimate of data center electricity use in 2024 is 192 terawatt-hours (TWh), accounting for 4.7% of total U.S. electricity consumption.”

Each source was opened and checked against the excerpt shown. Company statements are identified as such. Figures are as published; where sources differ, each is shown.