Ukrainian Soviet Socialist Republic - Administrative Divisions

Although, technically speaking, the Soviet Union and the fifteen republics that formed it constituted a federal system, it was also very much a centralised state, with major decision-making taking place at the Kremlin, the capital and seat of government of the country. The constituent republic were essentially unitary states, with lower levels of power being directly subordinate to higher ones. Throughout its 72-year existence, the administrative divisions of the Ukrainian SSR changed numerous times, often incorporating regional reorganisation and annexation on the part of Soviet authorities during World War II.

The most common administrative division was the oblast (province), of which there were 25 upon the republic's independence from the Soviet Union in 1991. Provinces were further subdivided into raions (districts) which numbered 490. The rest of the administrative division within the provinces consisted of cities, urban-type settlements, and villages. Cities in the Ukrainian SSR were a separate exception, which could either be subordinate to either the provincial authorities themselves or the district authorities of which they were the administrative center. Two cities, the capital Kiev, and Sevastopol in Crimea, treated separately because it housed an underground nuclear submarine base, were designated "cities with special status." This meant that they were directly subordinate to the central Ukrainian SSR authorities and not the provincial authorities surrounding them.