How many data centers are in California?

More Than Just Parks tracks 247 active data center facilities in California, each citing a public source: 196 operating, 14 under construction and 37 proposed. 21 more were canceled, withdrawn, suspended or blocked.

Where are the data centers in California?

California's data centers are in 26 counties. The most are in Santa Clara County (101), Los Angeles County (37) and San Diego County (21). The busiest places are around Santa Clara, Los Angeles and El Segundo.

How much electricity do California's data centers use?

We don’t publish a state total, and the reason matters: about seven in ten facilities here never disclose a capacity, so any sum would look like a census of California's data center load while leaving out the sites that stayed quiet. Each facility page shows the figure its own source states. A single large campus can draw as much power as a small city.

Are California data centers near protected land?

188 of the tracked facilities in California sit within 10 miles of protected public land, measured to the real boundary of the nearest national park, wilderness area, wildlife refuge or conservation area; one sits within a single mile.

Which county in California has the most data centers?

Santa Clara County has the most, with 101 tracked data centers, followed by Los Angeles County (37) and San Diego County (21).

Are there proposed data centers in California?

Yes. We track 37 proposed data centers in California, including NAVWAR Old Town Data Center (Manchester Financial Group), GLP Capital San Jose Data Hub and Golden Valley Technology Hub. 26 of them sit within 10 miles of protected public land.

Who is building data centers in California?

The most active operators in California are Equinix (20 sites), Digital Realty (13 sites) and Lumen Technologies (10 sites), counted by sites, not megawatts.

247 Data Centers in California (CA): Map, Proposed Sites

Find data centers near you in California

Type your ZIP code or your town and you’ll see what’s proposed, going up and already running near it, and how close each one sits to protected land. A ZIP opens its own page you can bookmark and share.

Know of a data center we’re missing? Tell us.

Data centers near you in California

Show 20 more

All 44 places in California

Who’s building in California

Proposed data centers in California

37 proposed data centers are on the record in California. By county, then name.

Data centers under construction in California

14 data centers are under construction in California. By county, then name.

Data centers operating in California

196 data centers are operating in California. By county, then name.

Projects stopped or paused

21 proposed projects in California were voted down, withdrawn, canceled or held by a moratorium. Each project’s page links the source for how it ended.

Closest to protected land

Distance is to the boundary of the nearest protected unit; open a facility to see which.

Share this page

Map of data centers in California

Map of the 247 data centers in California tracked by More Than Just Parks, updated October 2026 — Every light is a facility we can tie to a public source, drawn October 2026. Map by More Than Just Parks, free to share and embed with the credit link.

Download

Every tracked facility in California

247 facilities across 26 counties, the busiest first. Open a county to see its facilities; each one opens its own record.

Santa Clara County 17 proposed 8 under construction 76 operating101

Los Angeles County 4 proposed 1 under construction 32 operating37

San Diego County 1 proposed 20 operating21

Alameda County 2 proposed 1 under construction 15 operating18

Sacramento County 2 under construction 12 operating14

Orange County 11 operating11

San Francisco County 1 under construction 9 operating10

Fresno County 1 proposed 2 operating3

Kern County 2 proposed 1 operating3

San Bernardino County 3 operating3

San Luis Obispo County 3 operating3

San Mateo County 1 proposed 2 operating3

Solano County 2 proposed 1 operating3

Kings County 2 proposed2

Riverside County 1 proposed 1 operating2

Stanislaus County 1 proposed 1 operating2

Tulare County 1 proposed 1 operating2

Amador County 1 proposed1

Buena Vista AI Factory (NewYork GreenCloud, Ione)Campus

Contra Costa County 1 under construction1

AVAIO Digital Pittsburg Data Center CampusMid-size · 99 MW

Imperial County 1 proposed1

CalEthos Lithium Valley Data Center CampusCampus

Napa County 1 operating1

Kaiser Data CenterSmall

Placer County 1 operating1

Quest Roseville HABCEdge · 8 MW

San Joaquin County 1 operating1

Nautilus Data Technologies Stockton Floating DCEdge · 7 MW

Torrance County 1 operating1

EquinixMid-size

Trinity County 1 operating1

NTIA Data Center (Hoopa Valley Public Utilities District)Small

Yolo County 1 operating1

Lumen Sacramento 1 Data CenterNetwork

Data centers in California: common questions

How many data centers are in California?: More Than Just Parks tracks 247 active data center facilities in California, each citing a public source: 196 operating, 14 under construction and 37 proposed. 21 more were canceled, withdrawn, suspended or blocked.
Where are the data centers in California?: California's data centers are in 26 counties. The most are in Santa Clara County (101), Los Angeles County (37) and San Diego County (21). The busiest places are around Santa Clara, Los Angeles and El Segundo.
How much electricity do California's data centers use?: We don’t publish a state total, and the reason matters: about seven in ten facilities here never disclose a capacity, so any sum would look like a census of California's data center load while leaving out the sites that stayed quiet. Each facility page shows the figure its own source states. A single large campus can draw as much power as a small city.
Are California data centers near protected land?: 188 of the tracked facilities in California sit within 10 miles of protected public land, measured to the real boundary of the nearest national park, wilderness area, wildlife refuge or conservation area; one sits within a single mile.
Which county in California has the most data centers?: Santa Clara County has the most, with 101 tracked data centers, followed by Los Angeles County (37) and San Diego County (21).
Are there proposed data centers in California?: Yes. We track 37 proposed data centers in California, including NAVWAR Old Town Data Center (Manchester Financial Group), GLP Capital San Jose Data Hub and Golden Valley Technology Hub. 26 of them sit within 10 miles of protected public land.
Who is building data centers in California?: The most active operators in California are Equinix (20 sites), Digital Realty (13 sites) and Lumen Technologies (10 sites), counted by sites, not megawatts.

Every facility on this page cites a public record we can link to: industry reporting, facility trackers, company announcements, and local planning and utility filings, cross-referenced against protected public land. Part of the Data Center Tracker from More Than Just Parks. A facility shows a capacity only where its own source states one.

Data centers in California