Thomas Geiger to Serve as Contra Costa County Counsel

Contra Costa’s Chief Assistant County Counsel Thomas Geiger is being promoted to County Counsel. His formal appointment will be approved on April 4.

Geiger will lead a team of 55 attorneys and advise the Board of Supervisors, county departments, boards and commissions, and some special districts. 

“It’s a privilege to serve Contra Costa County in this role and to lead such an incredible team in the county counsel's office," Geiger said in a statement. "I am deeply honored to be selected as county counsel and for the opportunity to help the board of supervisors carry out its vision of delivering quality public services that make a difference in the lives of people throughout our county.”  

"Tom has a long history of public service in Contra Costa and has skillfully guided our county through complicated legal issues involving disaster response, land use and other significant community matters," said board chair John Gioia. "We are grateful for his strong leadership, commitment to equity and transparency, and his ability to implement the board's priorities on the public's behalf."

Geiger earned his bachelor's degree in history from Stanford University and a law degree from the University of California, Davis School of Law. He replaces Mary Ann Mason, who retired as County Counsel in November.