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List of Aon subsidiaries

Verified insights into Aon’s global corporate structure and subsidiaries.

Aon plc is a global professional services firm headquartered in Chicago, United States. Established over 100 years ago, Aon operates through a wide network of subsidiaries, with a total of 1,509 entities worldwide. This ownership information comes from CompanyData.com’s verified corporate hierarchy database, which covers more than 380 million companies globally.

Geographic spread of Aon’s subsidiaries

Aon has 1,509 subsidiaries across 69 countries, with 775 in the United States (51.3%), 92 in Canada (6.1%), and 158 in the United Kingdom (10.5%). Together, these three countries account for nearly 68% of Aon’s worldwide subsidiaries, supporting its services across risk management, insurance brokerage, and consulting industries.

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  • Global ownership data

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  • Structured hierarchies

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Top Subsidiaries and Companies Owned by Aon

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Company Name Country City Address 1 Address 2 State/Province Postal Code Website Founding Year Yearly Revenue in U.S. Dollars Employees Total Business Legal Type - Description Number of Companies in Group Company Registration Number Email Phone Number UniqueID
1
Allied North America Insurance Brokerage Of New York, LLC
USA
Hartford
100 Pearl St Bsmt
N/A
Hartford
06103
N/A
N/A
$0
46
1510
N/A
*****@*****.***
0287151657
2
Nfp CORP.
USA
Miramar
14471 Miramar Pkwy Ste 201
N/A
Broward
33027
nfp.com
N/A
$0
12
1510
N/A
*******@***.***
30*****03
0129890693
3
Nfp CORP.
USA
Somerville
50 Division St Ste 501
N/A
Somerset
08876
N/A
N/A
$0
8
1510
N/A
*********@******.***
33*****99
0229914541
4
Aon Consulting, INC.
USA
San Francisco
199 Fremont St Fl 11
N/A
San Francisco
94105
aon.com
N/A
$0
8
1510
N/A
******@***.***
41*****00
0939763859
5
Aon Risk Services Companies, INC.
USA
Albuquerque
6000 Uptown Blvd Ne Ste 400
N/A
Bernalillo
87110
aon.com
N/A
$0
5
1510
N/A
******@****.***
50*****00
0939752166
6
Nfp CORP.
USA
Henderson
1050 Wigwam Pkwy Ste 110
N/A
Clark
89074
myaimnv.com
N/A
$0
4
1510
N/A
*******@****.***
70*****44
0192141868
7
Aon Risk Services Companies, INC.
USA
Casper
421 S Center St Ste 200
N/A
Natrona
82601
N/A
N/A
$0
2
1510
N/A
**********@******.***
30*****28
01055068344
8
Nfp CORP.
USA
New York City
200 Park Ave Rm 3202
N/A
New York
10166
nfp.com
1998
$1,800,212,259
5136
Corporation
1510
2939469
************@****.***
21*****00
0193182003
9
Aon Consulting Worldwide, INC.
USA
Lyndhurst
125 Chubb Ave Fl 2a
N/A
Bergen
07071
aongroup.com
N/A
$0
1395
1510
N/A
************@********.***
20*****00
0270938158
10
Stroz Friedberg, LLC
USA
New York City
1 Liberty Plz Ste 3201
N/A
New York
10006
strozfriedberg.com
2016
$49,913,306
427
Corporation
1510
2469928
*****@***.***
21*****40
0128726575
11
Nfp Property & Casualty Services, INC.
USA
Chicago
500 W Madison St Ste 2710
N/A
Cook
60661
nfp.com
N/A
$0
113
1510
N/A
***********@*******.***
31*****00
0228366792
12
Aon Risk Services South, INC.
USA
Greenville
40 W Broad St Ste 210
N/A
Greenville
29601
aon.com
N/A
$0
104
1510
N/A
******@****.***
86*****10
0943036854
13
Aon Re, INC.
USA
Philadelphia
One Liberty Place, 1650 Market Street #3400
N/A
Philadelphia
19103
aon.com
N/A
$0
102
1510
N/A
**********@****.***
21*****00
0953176052
14
Bronfman E.L. Rothschild, L.P.
USA
Rockville
1 Preserve Pkwy Ste 610
N/A
Montgomery
20852
highlinewealth.com
2019
$2,721,279
86
Partnership of unknown type
1510
5329917
*******@*******.***
30*****00
0190737821
15
Affinity Insurance Services, INC
USA
Hatboro
159 E County Line Rd
N/A
Montgomery
19040
aon.com
N/A
$0
83
1510
N/A
*****@*****.***
21*****00
0293162213
16
Affinity Insurance Services, INC.
USA
Fort Washington
1100 Virginia Dr Ste 250
N/A
Montgomery
19034
aon.com
N/A
$0
83
1510
N/A
********@*******.***
21*****00
0230142381
17
E. W. Blanch International, INC.
USA
Minneapolis
3600 American Blvd W Ste 700
N/A
Hennepin
55431
N/A
1992
$1,976,327
75
Corporation
1510
2413782
*******@***.***
95*****00
0163822060
18
Aon Consulting, INC.
USA
Wichita
1995 Midfield Rd
N/A
Sedgwick
67209
aon.com
N/A
$0
68
1510
N/A
********@***.***
0939753925
19
Lapre Scali & CO Insurance Services LLC
USA
Scottsdale
8777 N Gainey Center Dr
N/A
Maricopa
85258
nfp.com
2011
$3,485,844
65
Corporation
1510
N/A
********@*****.***
48*****56
0950594629
20
Aon Consulting, INC.
USA
Eau Claire
1324 W Clairemont Ave Ste 4
N/A
Eau Claire
54701
N/A
N/A
$0
61
1510
N/A
*******@*******.***
0939764591
21
Charon Planning Health & Welfare, LLC
USA
Warrington
2600 Kelly Rd
N/A
Bucks
18976
charonplanning.com
2007
$1,309,676
56
Corporation
1510
0000567889
*********@********.***
0912902335
22
Affinity Insurance Services, INC.
USA
Santa Cruz
305 San Vicente Ter
N/A
Santa Cruz
95060
aon.com
N/A
$0
52
1510
N/A
********@*******.***
0896190624
23
Balser Financial CORPORATION
USA
Atlanta
3445 Peachtree Rd Ne Ste 200
N/A
Fulton
30326
nfp.com
1998
$1,902,216
50
Corporation
1510
K846445
**********@******.***
40*****07
0268687975
24
Aon Investments USA INC.
USA
Tampa
7650 W Courtney Campbell Cswy Ste 1000
N/A
Hillsborough
33607
aon.com
N/A
$0
50
1510
N/A
************@********.***
81*****00
0191465556
25
Aon Consulting, INC.
USA
Raleigh
2300 Rexwoods Dr Ste 200
N/A
Wake
27607
aon.com
N/A
$0
45
1510
N/A
*******@******.***
91*****00
01039414053
26
Eca Marketing, INC.
USA
Eden Prairie
7800 Equitable Dr Ste 200
N/A
Hennepin
55344
ecamarketing.com
2018
$3,110,225
44
Corporation
1510
9K-432
************@****.***
95*****10
01074082004

Companies by Employee Size

  • 0 or Unknown 301
  • 1 to 100 1,099
  • 101 to 499 83
  • 500 to 999 8
  • 1.000 to 4.999 18

Companies by Revenue Size (in USD)

  • 0 or Unknown 871
  • 1 to 100.000 12
  • 100.001 to 499.999 141
  • 500.000 to 999.999 97
  • 1.000.000 to 4.999.999 205
  • 5.000.000 to 9.999.999 54
  • 10.000.000 to 49.999.999 72
  • 50.000.000 to 99.999.999 20
  • 100.000.000 to 499.999.999 25
  • 500.000.000 to 999.999.999 4
  • 1.000.000.000 or more 8
Download Data

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Explore Aon's Global Corporate Structure

Aon’s ownership network is part of over 41 million corporate hierarchies in our company ownership database. It shows how Aon is organized worldwide, listing parent companies and subsidiaries with verified data from groups active in 150 countries and jurisdictions. Discover how our data works — and request a sample tailored to your needs.

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Aon Company Facts

Where is Aon headquartered?

In Chicago, United States (Aon Center).

How many subsidiaries does Aon have?

About 1,509 worldwide across 71 countries.

Who owns Aon?

Aon plc is publicly listed; no single majority shareholder.

Is Aon a US company?

Yes. Aon plc is incorporated in the USA.

How many people work for Aon?

Aon employs over 50,000 people globally.

Corporate family tree

Why Understanding Aon's Ownership Structure is Important

Knowing who owns and controls a company helps you understand how it functions and connects globally. Our corporate hierarchy data allows you to trace relationships between parent companies, subsidiaries, and shareholders, showing control, structure, and risks within any global group. This insight is vital when looking at Aon or other multinational corporations for compliance purposes, market analysis, and better data management. With verified ownership records of over 380 million companies worldwide, CompanyData.com delivers clear data on corporate ownership across industries and countries.

How We Structure Global, National, and Local Headquarters for Aon

At CompanyData.com, each company profile including Aon is organized using a three-level model: Global, National, and Local headquarters. This structure shows how every entity fits within the larger corporate family.

Levels of corporate hierarchy explained

  • Global Headquarter — Aon plc is the global headquarter for the Aon Group and serves as the top-level parent company, based in London, United Kingdom. It holds overall control over the entire group.
  • National Headquarters — These are country-specific entities within the group, coordinating local operations and reporting back to the global parent. Some examples include Aon USA Inc., Aon Canada Ltd., and Aon Netherlands B.V.
  • Local Headquarters — These manage specific branches, offices, or regional operations to ensure local compliance and market presence within their territories.

Each entity receives a unique identifier to link subsidiaries with parent firms, trace ownership paths, and enable easy integration with your internal systems.

How we identify control

Control is defined based on ownership shares. When a company owns over fifty percent of another, it is viewed as a controlled subsidiary. Our focus on majority-controlled subsidiaries provides a clear picture of ownership and corporate hierarchy, capturing the full global scale of groups like Aon.

Why this matters for your business

This methodology highlights who ultimately makes decisions within the Aon Group, streamlines compliance checks, aids in merger and acquisition analysis, and supports risk management. By mapping each company with verified ownership data, CompanyData.com gives you confidence to explore Aon’s corporate structure fully. With over 1,500 entities linked across more than 85 countries, our platform creates transparency for complex international corporate families.

 

Aon

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Aon ownership & subsidiary data – FAQs

Aon plc is a leading global professional services firm providing a broad range of risk, retirement, and health solutions. Founded over a century ago, its headquarters are located in London, United Kingdom. Aon operates across multiple countries worldwide, managing risk and helping businesses optimize performance through data and analytics.

Key Business Areas of Aon:

Aon’s operations are divided into major segments that support its global presence:

  1. Risk Solutions: This segment offers risk management, insurance brokerage, and consulting services. Aon advises businesses on how to reduce risks and protect assets through tailored insurance and risk transfer strategies.
  2. Retirement Solutions: Aon provides retirement planning, consulting, and administration services helping organizations manage employee benefit programs and pension plans effectively.
  3. Health Solutions: This area focuses on health benefit consulting and solutions that help businesses manage employee health costs and promote wellbeing.
  4. Data & Analytics: Aon leverages advanced data capabilities to support decision making and provide insights on risk and human capital.

Aon’s Financial Overview:

Aon reported revenue of approximately $12.19 billion, reflecting its strength in global markets and diversified service offerings. Its financial performance continues to be driven by growth in advisory services and solutions across risk, health, and retirement sectors.

Global Footprint and Subsidiaries:

With over 1,500 subsidiaries operating internationally, Aon has a strong presence in 94 countries. Key country markets include the USA (775 subsidiaries), UK (158 subsidiaries), Canada (92 subsidiaries), Germany (42 subsidiaries), Spain (56 subsidiaries), and Italy (83 subsidiaries). This extensive network supports local and multinational clients effectively.

Sustainability and Corporate Responsibility:

Aon emphasizes responsible business practices including environmental sustainability and social initiatives. The company invests in programs promoting diversity, equity, and inclusion, as well as community engagement globally.

Challenges and Opportunities:

Aon faces challenges like regulatory changes and market volatility but continues to see opportunities through technology innovation and expanded advisory services, especially in emerging markets.

Conclusion:

As a global leader in risk and human capital solutions, Aon’s broad portfolio and international reach position it well for future growth. For up-to-date details, review Aon’s official reports and verified data from sources like CompanyData.com.

 

 

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If you need company data from any organization or industry, CompanyData.com provides complete global coverage. You’ll get accurate, verified business information across every country and sector. Simply tell us what you’re looking for, and our experts will prepare a custom dataset that fits your goals. Within 24 hours, you’ll receive a free quote, record count, and sample data. Once approved, we deliver your data fast — via Excel, API, bulk file, or directly in the Bold Platform.

The price of our Aon company data depends on your details and delivery method. Whether you need a list of subsidiaries or the full dataset via API or bulk files, we offer flexible pricing to suit your needs. Request a free quote and record count within 24 hours — our team provides transparent pricing and a free sample of 10 company contacts. At CompanyData.com, you only pay for the verified global data you need.

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At CompanyData.com, you can access detailed, verified data on Aon plc and all its subsidiaries, updated daily. This includes company names, registration details, locations, industry classifications, financial indicators, and key contacts. You can download the data via the Bold Platform, API, or bulk file delivery. Our database offers 100% worldwide company coverage, ensuring complete and accurate insights.

At CompanyData.com, our data comes from verified global business sources to ensure accuracy and full coverage. We combine official registers, financial filings, LEI records, trusted partners, and verified company websites. All data is cross-checked and validated by our experts, ensuring it’s accurate, up-to-date, and GDPR-compliant.

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