Chornomorsk (Ukrainian: Чорномо́рськ, pronounced [t͡ʃornoˈmɔrsʲk]), formerly Illichivsk (Ukrainian: Іллічі́вськ, translit. Illichivs'k), is a city in Odesa Raion, Odesa Oblast (province) of south-western Ukraine, dependent on the Port of Chornomorsk. The city is located around the Sukhyi Estuary. Population: 58,524 (2021 est.)Originally, the city was established as a satellite town of Odesa.