Tracking the Scale of ICE Detention's First Year
Federal data through March shows more than 450,000 people experienced ICE detention in the Trump administration's first fourteen months — a count that includes both new bookings and inter-facility transfers.
More than 450,000 people moved through Immigration and Customs Enforcement custody in the first fourteen months of the second Trump administration, according to federal detention data through March 2026. The count combines initial bookings and transfers between facilities, exceeding the standing federal detention capacity several times over — a measure of throughput rather than headcount.
Each entry represents a person held, processed, and either released, removed, or transferred onward; the administrative paperwork that distinguishes “detention” from “transfer” is not visible from inside the cell. The data is federal record, not estimate, reconstructed by independent researchers from statistics that immigration enforcement agencies have not chosen to publish in aggregate themselves.