How many employees work at Iron Mountain?

Iron Mountain, Inc. has 30,402 employees, according to Revelio Labs workforce intelligence data. The YoY growth rate is -1.1%.

Data source: Revelio Labs Coverage: Global workforce Latest update: September 2025

About Iron Mountain

For over 70 years, Iron Mountain Incorporated (NYSE: IRM) has been your strategic partner to care for your information and assets. A global leader in storage and information management services and trusted by more than 225,000 organizations around the world, including 95% of the Fortune 1000, we protect, unlock, and extend the value of your work—whatever it is, wherever it is, however it’s stored. We create the framework necessary to bridge the gaps between paper, digital, media, and physical data and extract value along its lifecycle, helping to build your organizational resilience. And all this with a commitment to sustainability at our core. Our relationship is a true partnership where you trust us not only to preserve institutional knowledge and enhance efficiency, security, and access but to make your work mean more. Because in that work is the power to not only accelerate your business, but elevate it. Elevate the power of your work.

As of September 2025

Iron Mountain
workforce metrics

Headcount

30.4k

Avg. Salary

$48.1k

Tenure

4.9yr

Growth Rate

-1.1%

Hiring Rate

Attrition Rate

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Employee Headcount

Interactive chart of Iron Mountain annual worldwide employee count from 2023 to 2025.

  • Iron Mountain total number of employees in 2025 was 30,492.191, a 1.1% decline from 2024.
  • Iron Mountain total number of employees in 2024 was 30,593.961, a 2.2% increase from 2023.
  • Iron Mountain total number of employees in 2023 was 29,985.196, a 2.4% increase from 2022.

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Employee Geographic Breakdown

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Employee Role Breakdown

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Employee Compensation

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Active Job Postings

Interactive chart of Iron Mountain annual active job postings from 2023 to 2025.

  • Iron Mountain active job postings in 2025 was 7,097, a 11.8% increase from 2024.
  • Iron Mountain active job postings in 2024 was 5,944, a 14.9% increase from 2023.
  • Iron Mountain active job postings in 2023 was 5,118, a 51.8% decline from 2022.

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Employee Sentiment

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