Pereiaslav-Khmelnytskyi is an ancient city in the Kiev Oblast of central Ukraine, located on the confluence of Alta and Trubizh rivers some 95 km south of the nation's capital Kiev. Until 1943, the city was known as Pereyaslav. Population: 27,945 . Serving as the administrative center of the Pereiaslav-Khmelnytskyi Raion, Pereiaslav-Khmelnytskyi itself is designated as a city of regional significance and does not belong to the raion.