Costco – Liverpool – Opening Hours & Store Details Costco is prominently found at 30 Waterloo Rd, about 0.48 miles north-west of the centre of Liverpool (close to East Waterloo Dock). This store serves people chiefly from the neighborhoods of Baltic Triangle, Birkenhead, Chinatown, Seacombe, Liverpool City Centre, Islington, Everton and Knowledge Quarter. Read the specifics on this page for Costco Liverpool, including the opening hours, directions, direct phone and further essential details.