ABA Services - Areas We Serve Home » ABA Therapy Service Areas Proudly providing ABA Services in the following locations: Vaughan | King | Markham | Richmond Hill | Aurora | Newmarket | Stouffville | East Gwillimbury | Georgina | Queensvile King Creek | Unionville | Caledon | Brampton | Mississauga, Milton | Halton Hills | Toronto Contact Us Today Schedule A Free Consultation Online or Call 905-780-9680 BOOK ONLINE