Iron Mountain number of employees

Iron Mountain reported 11,150 employees at December 31, 2024 in its latest annual report, up 650 (6.2%) on the year before. That compares with 9,000 at December 31, 2021. Revenue per employee was $551,561.

Headcount by year

Fiscal year end	Employees	Change	Revenue per employee	Source
December 31, 2024	11,150	+650 (6.2%)	$551,561	10-K, filed February 14, 2025
December 31, 2023	10,500	+500 (5.0%)	$521,932	10-K, filed February 22, 2024
December 31, 2022	10,000	+1,000 (11.1%)	$510,357	10-K, filed February 23, 2023
December 31, 2021	9,000	—	$499,059	10-K, filed February 24, 2022

What the annual reports say

HUMAN CAPITAL MANAGEMENT EMPLOYEES As of December 31, 2024, we employed approximately 11,150 employees in the United States and approximately 17,700 employees outside of the United States. 2024 annual report
HUMAN CAPITAL MANAGEMENT EMPLOYEES As of December 31, 2023, we employed approximately 10,500 employees in the United States and approximately 16,500 employees outside of the United States. 2023 annual report
HUMAN CAPITAL MANAGEMENT EMPLOYEES As of December 31, 2022, we employed approximately 10,000 employees in the United States and approximately 16,000 employees outside of the United States. 2022 annual report
HUMAN CAPITAL MANAGEMENT EMPLOYEES As of December 31, 2021, we employed approximately 9,000 employees in the United States and approximately 16,000 employees outside of the United States. 2021 annual report

Headcount as the company states it in Item 1 of its annual report (some count full-time equivalents or exclude part-time and temporary staff), at the date it gives. Years where the report states no clear total are left out rather than estimated. Changes can reflect acquisitions and disposals as well as hiring and job cuts.

Compare with peers

Head to head: IRM vs LAMR IRM vs OUT EPR vs IRM

More: Other Specialized REITs stocks compared, Real Estate sector, rankings of US companies

Figures from Iron Mountain's SEC filings (10-K and 10-Q), retrieved October 20, 2026. How we read and check them: methodology and data sources. Not investment advice. Back to Iron Mountain.