FracTracker’s U.S. Data Centers Tracker is an open-access, facility-level dataset and mapping tool that documents the rapid build out of AI and data center infrastructure across the United States. It can be downloaded, shared, and used by anyone (with credit to FracTracker, please see our Terms of Service and Private Policy below). This dataset provides an in-progress tally of permitted, existing, and proposed data centers in the United States. We mainly determine the locations of these sites through scans of media announcements, incorporation of partner datasets, public records, permit documents, parcel data, and Freedom of Information Act/Right to Know request responses. The main focus of the map is proposals (i.e. locations relevant for advocacy), and existing data centers are slowly being added. The information presented here is a constant work in progress and we cannot guarantee its accuracy or completeness.