Top Property and Casualty Insurance Companies in United States
State Farm Mutual Automobile Insurance Co.
Berkshire Hathaway Inc. (GEICO, National Indemnity)
The Progressive Corp.
Allstate Corp.
Liberty Mutual Holding Co.
*Disclaimer: Top companies sorted in no particular order

United States Property and Casualty Insurance - Competitive Concentration

List of Property and Casualty Insurance Companies in United States
State Farm Mutual Automobile Insurance Co.
Berkshire Hathaway Inc. (GEICO, National Indemnity)
The Progressive Corp.
Allstate Corp.
Liberty Mutual Holding Co.
USAA
Travelers Cos. Inc.
Chubb Ltd.
Nationwide Mutual Insurance Co.
American International Group Inc.
Farmers Insurance Group
Hartford Financial Services Group
CNA Financial Corp.
W. R. Berkley Corp.
American Family Insurance Group
Old Republic International Corp.
Tokio Marine (HCC)
Markel Group Inc.
Fairfax Financial Holdings Ltd. (Crum & Forster)
Zurich North America
Arch Capital Group Ltd.



