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Mastercard
Mastercard O'Fallon Global Technology Hub
St. Charles County, Missouri
Not shown on the map. Single-site operator, already in service, no published capacity. We rank it small because nothing about it says otherwise, and we say so.It stays in our records so you can find it, but it isn’t counted with the buildout.
Operating · first reported Dec 2019
~8.8mifrom the boundary ofBig Muddy National Fish And Wildlife Refuge · location held to about a kilometer, so the distance is approximate
- FootprintExisting, small by every signalSingle-site operator, already in service, no published figure. Ranked small because nothing about it says otherwise, and we say so.
- Grid regionMISO
The source
Data Center DynamicsSource-checked, read back against the document on Sep 10, 2026.
What’s happened here
Nothing dated on this site yet beyond its listing. A hearing, a filing, a vote, a photograph from the road: if you know of one, it belongs here.
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