Maximize Your Membership. The State Bar of Texas offers services to help Texas attorneys with their law practices.Please fill out the registration form below. The Collin County Bar Association (CCBA) is the largest bar association serving the legal community practicing in and around Collin County, Texas. What Do You Need Help With? Please fill out the following information so that we may respond to your request. It includes step-by-step guides and multilingual video instructions for civil cases. We will refer you to a Dallas area attorney (includes Plano and Collin County, Texas). State bar of texas created in 1939. Find the best municipal attorney serving Collin County.