Austin and San Antonio Data Centers
Austin Colocation, Round Rock and San Marcos, San Antonio’s Westover Hills Campuses, and Choosing Between Two Markets 1.2 ms Apart
Central Texas gives you two markets about 120 km apart: Austin for the tech corridor and San Antonio for lower-cost, large-scale capacity. We find the building that fits your requirement in either and negotiate the terms, at no cost to you.
Price My Austin or San Antonio RequirementAustin colocation suits companies that want space close to their engineering teams: software companies, chip designers and the many tech offices along the I-35 corridor. San Antonio offers more room and lower costs, and it is one of Microsoft's major hubs, which brings hyperscale infrastructure and fiber to the west side of the city. This page covers both markets, the providers and submarkets, how Texas power rules affect new capacity, and how to get space. Statewide context is on Texas data centers.
Latency figures are MCA calculations from straight-line distance, about 1 ms round trip per 100 km; real routes are longer. Free to cite with a link to this page.
Austin for proximity to your team, San Antonio for room and cost, priced side by side for your requirement.
After Texas paused new large-load approvals in August 2026, energized space is worth confirming in writing.
The two markets back each other up at about 1.2 ms, or pair with Dallas and Houston.
The operator you choose pays us. Your rate is not marked up, and you'll hear back within 24 hours.
Austin Data Centers
| Area | Operators | Best for |
|---|---|---|
| Southeast Austin and the airport area | CyrusOne's campus on Metropolis Drive, Digital Realty's AUS11, and LightEdge on Burleson Road | Enterprise colocation with room to grow |
| East Austin | Switch's campus on Smith School Road, from its purchase of Data Foundry announced in 2021, and Lumen sites | Retail and enterprise colocation and connectivity |
| North Austin | DataBank AUS1 on McNeil Drive | Retail colocation near the north-side tech offices |
| Round Rock | Sabey Data Centers’ campus of up to 72 MW, and Switch’s planned campus next to Dell’s headquarters | Larger deployments north of the city |
| San Marcos | Large planned campuses between Austin and San Antonio | Future wholesale and AI capacity |
Facility locations from Datacenters.com, OCOLO and operator sites. As of October 2026.
Send power, cabinet count, connectivity needs and date. You'll hear back within 24 hours with the Austin buildings that fit, and San Antonio alternatives.
San Antonio Data Centers
San Antonio's data centers concentrate in Westover Hills on the west side, where Microsoft built one of its major hubs and CyrusOne runs a multi-building campus. Microsoft's footprint extends further west toward Castroville in Medina County, and Vantage Data Centers is developing a new campus in the city. The city is also home to Rackspace's headquarters and a large base of military and government infrastructure.
| Area | Operators | Best for |
|---|---|---|
| Westover Hills | CyrusOne's San Antonio campus and multiple Microsoft facilities | Enterprise and wholesale colocation, and hyperscale |
| West side and Medina County | Microsoft's expanding campuses toward Castroville | Hyperscale, mostly single-tenant |
| Citywide | Lumen and smaller operators, plus Vantage's new campus | Retail colocation, connectivity and new wholesale capacity |
Sources: ROC Telecom San Antonio overview and operator sites.
Austin or San Antonio?
| Austin | San Antonio | |
|---|---|---|
| Strength | Proximity to tech companies and engineering teams | Room to grow and lower costs |
| Anchor operators | Switch, CyrusOne, Digital Realty, DataBank | Microsoft, CyrusOne, Vantage |
| Utility | Austin Energy | CPS Energy |
| Common role | Primary site for Central Texas tech companies | Primary for larger deployments, or recovery for Austin, Dallas and Houston |
MCA calculation from straight-line distance, about 1 ms round trip per 100 km; real fiber routes are longer. Free to cite with a link to this page.
Power in Central Texas
Austin and San Antonio are served by municipal utilities, Austin Energy and CPS Energy, both on the ERCOT grid. New large loads of 75 MW and more fall under the 2025 law known as SB 6, and on August 3, 2026 Texas paused new data center interconnection approvals while it audits ERCOT's large-load queue. Colocation in existing, energized buildings is unaffected; new multi-megawatt and AI requirements should confirm energization dates in writing. Detail is on Texas data centers.
AI and GPU Capacity
Austin's tech companies and chip designers drive steady demand for GPU racks, and San Antonio's large campuses suit bigger AI deployments. Air-cooled GPU cabinets fit at several facilities in both markets; rack-scale liquid-cooled systems need halls built for them. See AI and GPU colocation and direct to chip cooling.
What Austin and San Antonio Colocation Costs
Both markets generally price below coastal markets, with San Antonio's large campuses keeping wholesale space competitive. Benchmarks are on the colocation pricing guide.
Who These Markets Suit
Austin tech companies
Primary space close to engineering teams and offices.
Texas recovery sites
San Antonio or Austin backing up Dallas or Houston.
Wholesale and AI tenants
San Antonio, Round Rock and San Marcos for larger requirements.
Companies leaving cloud
Lower costs than coastal markets. See cloud repatriation.
How We Find Space
You send the requirement
Power, cabinet or megawatt count, connectivity and date. You'll hear back within 24 hours.
We compare both markets
Which Austin and San Antonio buildings have space and energized power for your date.
We negotiate and you sign
Rate, power, term and exit terms negotiated before you sign. The operator you choose pays us.
Frequently Asked Questions
How many data centers are in Austin?
Directory counts range from about 18 to more than 50, depending on what they include. The main colocation operators are Switch, CyrusOne, Digital Realty, DataBank, Lumen, LightEdge and Flexential, with wholesale growth in Round Rock and San Marcos.
Who are the main Austin colocation providers?
Switch, which bought Data Foundry in a deal announced in 2021 and runs a campus on Smith School Road; CyrusOne on Metropolis Drive; Digital Realty's AUS11; DataBank AUS1 on McNeil Drive; Lumen; and LightEdge on Burleson Road.
How many data centers are in San Antonio?
Dozens, concentrated in Westover Hills on the west side, including Microsoft's facilities and CyrusOne's campus, with Microsoft expanding toward Castroville and Vantage building a new campus.
Does Microsoft have data centers in San Antonio?
Yes. San Antonio is one of Microsoft's major hubs, with facilities in Westover Hills and on the west side and expansion toward Castroville in Medina County.
Where are the data centers in San Antonio?
Mainly in Westover Hills on the west side, near State Highway 151, with growth further west into Medina County.
What is at San Marcos?
Large planned data center campuses between Austin and San Antonio, aimed at wholesale and AI tenants. Timelines depend on power under Texas's large-load rules.
Is Round Rock a data center market?
Yes, for wholesale space north of Austin, including Sabey Data Centers' campus of up to 72 MW and a large Switch campus planned next to Dell's headquarters.
Austin or San Antonio for colocation?
Austin for proximity to tech companies and engineering teams; San Antonio for room to grow and lower costs. At about 1.2 ms apart, many companies use one as the primary and the other for recovery.
How much does colocation cost in Austin?
Austin and San Antonio generally price below coastal markets, with San Antonio among the more affordable large Texas markets for wholesale space. Quotes depend on power, cabinet count, term and connectivity.
Who supplies power to Austin and San Antonio data centers?
Austin Energy and CPS Energy, municipal utilities on the ERCOT grid. Large new loads also fall under Texas's SB 6 rules.
Did the Texas data center pause affect Austin and San Antonio?
The August 2026 pause covers new large-load interconnection approvals statewide. Existing, energized colocation space is unaffected; new multi-megawatt projects face a slower path.
Is San Antonio a good recovery site?
Yes, for Austin, Dallas and Houston primaries: close enough to replicate, with its own utility, though it shares the ERCOT grid with all three.
Can Austin data centers support GPU racks?
Air-cooled GPU cabinets fit at several Austin facilities. Rack-scale liquid-cooled systems need purpose-built halls, more likely at newer campuses in San Antonio, Round Rock or San Marcos.
How far is Austin from Dallas and Houston?
About 2.9 ms round trip to Dallas and 2.4 ms to Houston over fiber at minimum, close enough for replication across Texas markets.
Do you charge for finding Austin or San Antonio space?
No. The operator you choose pays us from its channel budget, and your rate is not marked up. You'll hear back within 24 hours.
Price Your Austin or San Antonio Requirement
Tell us power, cabinet or megawatt count, connectivity needs and date. You'll hear back within 24 hours from the person who will run your search. No cost, no obligation, and the operator you choose pays us.
Once you have contacted an operator directly, it usually will not work through an advisor on your deal.
Texas: Texas data centers, Dallas and Houston.
Planning: disaster recovery colocation, AI and GPU colocation, wholesale colocation and how a data center broker works.
