Odessa (Russian: Оде́сса; IPA: [ɐˈdʲesə]) or Odesa (Ukrainian: Одеса, pronounced [ɔˈdɛsɑ]) is the fifth largest city in Ukraine, with a population of 1,003,705. The city is a major seaport located on the northwestern shore of the Black Sea and the administrative center of the Odessa Oblast.