Kozacha Lopan (Ukrainian: Козача Лопань, pronounced [koˈzɑt͡ʃɐ ˈlɔpɐnʲ], Russian: Казачья Лопань) is an urban-type settlement in Kharkiv Raion of Kharkiv Oblast in Ukraine. It is located on the banks of the Lopan in the drainage basin of the Don, about 5 kilometres (3.1 mi) from the border with Russia. Kozacha Lopan belongs to Derhachi urban hromada, one of the hromadas of Ukraine. Population: 4,935 (2022 est.). From Wikipedia
