San Mateo: 32 West 25th Avenue San Mateo: 50 Tower Road San Mateo: 70 Loop Road Pagination Previous page Page 1 Page 2 Page 3 Page 4 Current page 5 HR's Main Office: 455 County Center, 5th Floor San Mateo County Government Center Redwood City CA 94063 HR Testing/Interview/Training Locations: Please see your notification letter/email for room assignment