Direct Answer
Iron Mountain reports revenue across 3 business segments in its fiscal 2025 Form 10-K. Global Records and Information Management Business is the largest, with $5.3 billion of revenue (77% of the total), followed by Corporate and Other at $807 million (12%). 66% of revenue came from the United States.
How Does Iron Mountain Make Money?
Global Records and Information Management Business supplies 77% of revenue, so Iron Mountain's results move mostly with that one business; the others matter more for diversification than for the headline number. Between fiscal 2024 and 2025, Corporate and Other grew fastest (+46.6%) and Global Records and Information Management Business slowest (+6.3%), so the revenue mix tilts toward Corporate and Other while that gap lasts.
| Segment | FY2025 revenue | FY2024 revenue | Share of revenue | Change |
|---|---|---|---|---|
| Global Records and Information Management Business | $5.3 billion | $5.0 billion | 76.7% | 6.3% |
| Corporate and Other | $807 million | $550 million | 11.7% | 46.6% |
| Global Data Center Business | $803 million | $620 million | 11.6% | 29.6% |
Where Does Iron Mountain's Revenue Come From?
Regions follow the definitions in the filing; most companies assign revenue by customer location.
| Region | FY2025 revenue | FY2024 revenue | Share of revenue | Change |
|---|---|---|---|---|
| United States | $4.6 billion | $4.0 billion | 66.3% | 14.1% |
| Other International | $1.6 billion | $1.4 billion | 22.5% | 10.0% |
| United Kingdom | $473 million | $426 million | 6.8% | 10.8% |
| Canada | $302 million | $303 million | 4.4% | -0.3% |
What the Segment Figures Do Not Show
The rows above add up to 100% of Iron Mountain's reported revenue for fiscal 2025; the difference is intersegment eliminations, corporate revenue or items the company reports outside its segments. Segment definitions are management's choice and change when a company reorganizes, in which case it restates prior years in the next filing, so a multi-year comparison should use the figures from a single filing. Revenue shows where sales come from, not where profit or cash is earned: a small segment can carry most of the margin.
Where These Numbers Come From
Every figure on this page is a value Iron Mountain reported in the segment note and revenue disclosures of its Form 10-K filed February 12, 2026 (accession 0001020569-26-000013), read from the SEC's Financial Statement Data Sets. The prior-year column is the comparative figure from that same filing, so it reflects any restatement for a change in segments. Category names are the company's own XBRL labels, lightly reformatted for reading.
Rows that only total other rows (for example a "Products" line beside the individual products) are left out so nothing is counted twice. This page is educational and describes reported history for fiscal 2025; it is not a forecast or a recommendation.
Frequently Asked Questions
What are Iron Mountain's business segments?
In its fiscal 2025 Form 10-K, Iron Mountain reports revenue for Global Records and Information Management Business, Corporate and Other and Global Data Center Business.
Which part of Iron Mountain brings in the most revenue?
Global Records and Information Management Business, with $5.3 billion of revenue in fiscal 2025, or 77% of the total.
How much of Iron Mountain's revenue comes from outside the United States?
34% in fiscal 2025, by the geographic breakdown Iron Mountain reports in its Form 10-K. Companies assign revenue to regions differently (customer location, shipping address or selling entity), so check the filing's definition before comparing companies.