List of Kelly Services Stores in San Mateo, CA Outlet Note Regular Brands Kelly Services California San Mateo Rating 4.5 based on 82 votes Official Website www.kellyservices.com/ Products Staffing Services NameAddressPhone Name/Address/Phone Kelly Services outlet - San Mateo 1300 S El Camino Real (408) 441-9561 Kelly Services outlet - San Mateo 1510 Fashion Island Blvd, Ste 370 (650) 513-5000 People Also Viewed