| BROWN & BROWN OF CONNECTICUT, INC.Rocky Hills, CT · Merged | Rocky Hills, CT | Corporation | May 3, 1990 | Merged |
| ARROWHEAD GENERAL INSURANCE AGENCY, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Jun 20, 1994 | Active |
| BROWN & BROWN, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Feb 4, 1998 | Active |
| BROWN & BROWN OF MISSOURI, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Sep 17, 2002 | Active |
| BROWN & BROWN PROGRAM INSURANCE SERVICES, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Dec 31, 2002 | Active |
| BROWN & BROWN INSURANCE OF GEORGIA, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Sep 15, 2003 | Withdrawn |
| BROWN & BROWN LONE STAR INSURANCE SERVICES, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Nov 17, 2003 | Withdrawn |
| TITLE PAC, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Jul 8, 2004 | Active |
| SAFERIDE MOTOR CLUB, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Jul 23, 2004 | Active |
| BROWN & BROWN OF WASHINGTON, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Nov 4, 2004 | Withdrawn |
| AMERICAN SPECIALTY INSURANCE & RISK SERVICES, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Dec 29, 2004 | Active |
| BROWN & BROWN OF MINNESOTA, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | May 20, 2005 | Withdrawn |
| BROWN & BROWN OF NEW HAMPSHIRE, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Jun 1, 2005 | Withdrawn |
| B&B PROTECTOR PLANS, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Oct 19, 2005 | Active |
| BROWN & BROWN INSURANCE SERVICES, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Jul 21, 2006 | Active |
| BROWN & BROWN OF GARDEN CITY, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Jun 19, 2007 | Active |
| BROWN & BROWN OF DELAWARE, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Oct 16, 2007 | Withdrawn |
| BROWN & BROWN OF TENNESSEE, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Oct 29, 2007 | Withdrawn |
| ONPOINT UNDERWRITING, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Dec 10, 2007 | Withdrawn |
| BROWN & BROWN OF KENTUCKY, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Mar 7, 2008 | Withdrawn |
| IRVING WEBER ASSOCIATES, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | May 20, 2009 | Active |
| BROWN & BROWN OF SOUTH CAROLINA, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Apr 22, 2010 | Withdrawn |
| ALLOCATION SERVICES, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Sep 30, 2010 | Active |
| YOUZOOM INSURANCE SERVICES, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Oct 25, 2010 | Active |
| BROWN & BROWN OF COLORADO, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Feb 2, 2011 | Withdrawn |
| BROWN & BROWN OF MICHIGAN, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Nov 8, 2011 | Withdrawn |
| BROWN & BROWN INSURANCE SERVICES OF CALIFORNIA, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Feb 7, 2012 | Withdrawn |
| BROWN & BROWN INSURANCE OF ARIZONA, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Jul 19, 2013 | Withdrawn |
| MONARCH MANAGEMENT INSURANCE SERVICES CORPORATIONLocation not reported, CT · Withdrawn | Location not reported, CT | Corporation | Oct 8, 2013 | Withdrawn |
| BROWN & BROWN OF NEW YORK, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Dec 24, 2013 | Withdrawn |
| BROWN & BROWN INSURANCE BROKERS OF SACRAMENTO, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Sep 8, 2014 | Withdrawn |
| BROWN & BROWN OF ILLINOIS, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Apr 30, 2015 | Active |
| BROWN & BROWN BENEFIT ADVISORS, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Jun 1, 2015 | Withdrawn |
| B&B FITNESS PG, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Sep 16, 2015 | Active |
| BROWN & BROWN OF ARKANSAS, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Oct 1, 2018 | Withdrawn |
| BROWN & BROWN PACIFIC INSURANCE SERVICES, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Oct 1, 2018 | Withdrawn |
| LOCALEDGE INSURANCE AGENCY, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Oct 17, 2018 | Active |
| HAYS COMPANIES, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Apr 8, 2019 | Active |
| BROWN & BROWN OF NEW MEXICO, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Jan 15, 2020 | Withdrawn |
| WINSTON FINANCIAL SERVICES, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Sep 29, 2021 | Active |
| AGIS NETWORK INSURANCE SERVICES CORP.Location not reported, CT · Active | Location not reported, CT | Corporation | Jan 24, 2023 | Active |
| NATIONWIDE AGENT RISK PURCHASING GROUP, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Feb 18, 2025 | Active |
| Cornerstone Insurance General Agency, Inc.Location not reported, CT · Active | Location not reported, CT | Corporation | Aug 6, 2026 | Active |