Aon headquarters details
- Street address
- 122 Leadenhall Street
- State / region
- England
- ZIP / postal code
- EC3V 4AN
- Country
- United Kingdom
- Phone
- +44 20 7623 5500
- Founded
- 1982
- Website
- aon.com
- Stock
- NYSE: AON
- linkedin.com/company/aon
Location map
Open in Google MapsAll Aon office locations
| City | State / region | Country | Type |
|---|---|---|---|
| Sydney | State of New South Wales | Australia | Office |
Showing 1 of 23 recorded locations. See every location in GraphIQ →
About Aon
Aon (NYSE: AON) is headquartered in England, United Kingdom. Founded in 1982, the company has 23 recorded locations across 10+ countries and employs approximately 60,000 people worldwide.
Aon regional offices
Beyond its headquarters, Aon has recorded locations in Australia, India, Ireland, Singapore, Spain, Sweden, Switzerland, The Netherlands and 2 other countries.
Aon contact information
The main switchboard for Aon headquarters can be reached at +44 20 7623 5500. Official website: aon.com.
What does Aon do?
Aon plc is a British-American professional services firm. The company operates two divisions: Risk Capital (67% of 2024 revenues), which provides brokerage and consulting services for risk management and insurance and reinsurance, and Human Capital (33% of 2024 revenues), which provides services for health insurance, retirement plans, pension plans, and talent advisory.
Aon competitors & similar companies
Frequently asked questions
Where is Aon headquarters?
Aon's headquarters is located at 122 Leadenhall Street, England EC3V 4AN, United Kingdom.
How many offices does Aon have?
GraphIQ records 23 locations for Aon across 10+ countries, as of October 2026.
What is Aon's corporate address?
The corporate headquarters address is 122 Leadenhall Street, England EC3V 4AN, United Kingdom.
When was Aon founded?
Aon was founded in 1982 and employs approximately 60,000 people.
What is Aon's phone number?
The main phone number for Aon headquarters is +44 20 7623 5500.
How many employees does Aon have?
Aon has approximately 60,000 employees (GraphIQ estimate, 2026).
Is Aon a public company?
Yes. Aon is publicly traded on NYSE under the ticker AON.