<P> The film stars Jaeden Lieberher and Bill Skarsgård as Bill Denbrough and Pennywise the Dancing Clown , respectively , with Jeremy Ray Taylor , Sophia Lillis , Finn Wolfhard , Wyatt Oleff , Chosen Jacobs , Jack Dylan Grazer , Nicholas Hamilton , and Jackson Robert Scott in supporting roles . Principal photography began in the Riverdale neighborhood of Toronto on June 27 , 2016 , and ended on September 21 , 2016 . Other Ontario locations included Port Hope and Oshawa . </P>
where was stephen king 's it 2017 filmed
Riverdale neighborhood of Toronto Ontario locations included Port Hope and Oshawa