Borisoglebsk is a town in Voronezh Oblast, Russia, located on the left bank of the Vorona River near its confluence with the Khopyor. Popul…Borisoglebsk is a town in Voronezh Oblast, Russia, located on the left bank of the Vorona River near its confluence with the Khopyor. Population: 60,687 ; 65,585 ; 69,392 ; 72,338 ; 65,000.