How many employees work at Aon?
Aon Plc has 121,762 employees, according to Revelio Labs workforce intelligence data. The YoY growth rate is 3.8%.
Data source: Revelio Labs Coverage: Global workforce Latest update: September 2025
About Aon
We exist to shape decisions for the better — to protect and enrich the lives of people around the world. Our colleagues provide our clients in over 120 countries and sovereignties with advice and solutions that give them the clarity and confidence to make better decisions to protect and grow their business.
As of September 2025
Aon
workforce metrics
Headcount
121.8k
Avg. Salary
$69.6k
Tenure
5.5yr
Growth Rate
3.8%
Hiring Rate
Attrition Rate
For even more metrics data,
reach out to our sales team.
Employee Headcount
Interactive chart of Aon annual worldwide employee count from 2023 to 2025.
- Aon total number of employees in 2025 was 122,433.468, a 3.8% increase from 2024.
- Aon total number of employees in 2024 was 117,513.378, a 4.4% increase from 2023.
- Aon total number of employees in 2023 was 112,687.873, a 3.0% increase from 2022.
Would you like to see the latest employee headcount data?
Employee Geographic Breakdown
Would you like to see the latest employee geographic data?
Active Job Postings
Interactive chart of Aon annual active job postings from 2023 to 2025.
- Aon active job postings in 2025 was 11,653, a 19.9% decline from 2024.
- Aon active job postings in 2024 was 15,552, a 5.9% decline from 2023.
- Aon active job postings in 2023 was 16,494, a 17.9% increase from 2022.
Would you like to see the latest active job postings data?
Employee Sentiment
Sentiment Topics
Would you like to see the latest employee sentiment data?
