List of Allstate Stores in Ontario, CA Outlet Note Regular Brands Allstate California Ontario Rating 4.9 based on 77 votes Official Website https://www.allstate.com/ Products Insurance Department Stores Insurance Adjusters NameAddressPhone Name/Address/Phone Allstate outlet - Ontario 2419 S Grove Ave (909) 923-0866 Allstate outlet - Ontario 1035 S Milliken Ave (909) 605-0783 Allstate outlet - Ontario 615 N Euclid Ave, Ste 118 (909) 988-9817 Allstate outlet - Ontario 4141 Inland Empire Blvd (909) 948-6440 People Also Viewed