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Top 20 Largest Data Centers Worldwide

Outside the U.S., China leads the world’s largest data centers by campus floor area, with China Telecom, China Mobile and China Unicom campuses in Hohhot (Inner Mongolia) and Langfang (Hebei). U.S. hyperscalers often lead in compute density.

The table lists campus-level size in square feet and announced or built MW where credible figures are published. Other ranked sites include Kolos in Norway, Yotta in India, AirTrunk and NextDC in Australia, and NTT in Japan.

Rank	Facility / Campus	Operator	Location	Size (sq ft)	Power (MW)	Notes
1	China Telecom Inner Mongolia Information Park	China Telecom	Hohhot, Inner Mongolia, China	10M+ (planned full build)	>1,000 (planned)	One of the largest planned data campuses worldwide.
2	Range International Information Hub	Range Technology	Langfang, Hebei, China	~6.3M	~150+	National-level data hub project in China.
3	China Mobile Harbin Cloud Data Center	China Mobile	Harbin, Heilongjiang, China	~7M	n/a (public data varies)	Massive multi-hall data complex.
4	China Mobile Guiyang Data Center	China Mobile	Guiyang, Guizhou, China	~7M	n/a (public data varies)	Guizhou province emerging as a Chinese data hub.
5	China Telecom Guizhou Cloud Big Data Center	China Telecom	Guiyang, Guizhou, China	~5.5M	n/a (public data varies)	Part of national strategy for cloud and big data.
6	China Unicom Langfang Data Center	China Unicom	Langfang, Hebei, China	~3.2M	n/a (public data varies)	Unicom’s flagship hyperscale cluster.
7	China Mobile Inner Mongolia Hohhot Campus	China Mobile	Hohhot, Inner Mongolia, China	~1.5M+	n/a (public data varies)	Complementary to China Telecom’s Hohhot park.
8	Kolos Data Center (planned)	Kolos	Ballangen, Norway	~6.5M (planned)	Up to 1,000 (planned)	Renewable-powered Scandinavian mega project.
9	Yotta NM1 Campus	Yotta Infrastructure	Mumbai, India	~820k (first phase)	Up to 200+	India’s largest operational data center campus.
10	GDS Hebei Langfang Data Center Campus	GDS Holdings	Langfang, Hebei, China	~430k+ (phase 1)	~100+	Part of Hebei’s strategic data hub.
11	China Telecom Nantong Data Center	China Telecom	Nantong, Jiangsu, China	Campus scale	n/a	Tier-4 certified, major coastal hub.
12	China Mobile Beijing Data Center	China Mobile	Beijing, China	Campus scale	n/a	Supports capital-region government & enterprise cloud.
13	China Telecom Tianjin Data Center	China Telecom	Tianjin, China	Campus scale	n/a	Northeast China capacity expansion.
14	Chayora Tianjin Campus	Chayora	Tianjin, China	>300 acres (multi-building)	n/a	Designed for global hyperscaler tenants.
15	NextDC Sydney Campus	NextDC	Sydney, Australia	Campus scale	n/a	Flagship Australian hyperscale-ready facility.
16	AirTrunk Sydney West Campus	AirTrunk	Sydney, Australia	Campus scale	Up to 300+	Largest hyperscale footprint in Australia.
17	ST Telemedia Singapore Data Center Campus	STT GDC	Singapore	Campus scale	n/a	Strategic Southeast Asia hub.
18	CtrlS Hyderabad Campus	CtrlS	Hyderabad, India	Campus scale	n/a	Tier-4 certified, large-scale hyperscale hosting.
19	Keppel Data Centres Dublin Campus	Keppel DC	Dublin, Ireland	Campus scale	n/a	European hyperscale and enterprise hosting hub.
20	NTT Tokyo Data Center Campus	NTT	Tokyo, Japan	Campus scale	n/a	Anchor site for Japan’s hyperscale demand.

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