Lutsk (Ukrainian:Луцьк, translit. Luts'k, Polish:Łuck, Yiddish:לוצק‎) is a city on the Styr River in northwestern Ukraine. It is the administrative center of the Volyn Oblast (province) and the administrative center of the surrounding Lutsk Raion (district) within the oblast, though it is not a part of the raion. Lutsk has the status of a city of oblast significance, equivalent to that of a raion. Population: 217,103(2015 est.)