The Orange County Branch opened in January 2005 after many years of managing events in Orange County from the Los Angeles branch office. Initially the service areas covered an expansive territory including: Orange, Riverside, San Bernardino and San Diego Counties. The major venues included: Angel Stadium of Anaheim, City National Grove of Anaheim, Verizon Wireless Amphitheater, Anaheim Convention Center, San Manuel Amphitheater, the Auto Club Speedway, Cricket Wireless Amphitheater and San Diego Convention Center.

As the Orange County branch continued to grow, a San Diego branch office opened in July 2010 and six months later, a San Bernardino branch office opened covering Riverside and San Bernardino counties. 

During the month of January, CSC Orange County provides services for motor sports events held at Angels Stadium, home to the American League Baseball's Los Angeles Angels of Anaheim. There are five weekends of motocross, monster trucks and quad runner racing.  In April, CSC works with several other branches to handle crowd management for the Coachella Music and Arts Festival and the Stagecoach festival. 

Over the summer months, CSC provides concert services to annual events including: KROQ Weenie Roast, Jack FM Show, and the Pacific Symphony Orchestra. September usually means baseball pennant fever as the Angeles head toward the playoffs.  In addition, CSC does several special events including surfing and skateboarding. CSC also provides specialized services including guard services at St Joseph's Hospital and UCI Medical Center.

CSC is the world leader in crowd management and guest services for the entertainment and sporting event industries. With more than 44 years of experience, CSC has garnered a loyal and esteemed client base, including more than 100 stadiums and arenas, over 90 universities and colleges, more than 20 convention centers, and numerous clients in the MLB, MLS, NBA, NFL, NHL, and NASCAR. CSC also provides services for the world’s most prestigious special events, including College Bowl Games, Final Four Tournaments, US Open Tennis, 29 Super Bowls, 7 Olympic Game, 4 Presidential Inaugurations, 2 Papal Visits, and 2 FIFA World Cups. CSC operates more than 45 branch locations throughout the United States and Canada.