Supervisor Ken Carlson, Contra Costa County, District 4 Categories Government & Officials 2255 Contra Costa Blvd. Ste 202 Pleasant Hill CA 94523 (925) 521-7100 (925) 646-5202 Send Email Visit Website Rep/Contact Info Ken Carlson × Ken Carlson Phone: (925) 521-7100 Send an Email Share × Print Email Facebook Twitter LinkedIn Tell a Friend ×