Zaporizhzhia, formerly known as Aleksandrovsk or Oleksandrivsk until 1921, is a city in southeast Ukraine, situated on the banks of the Dnieā¦Zaporizhzhia, formerly known as Aleksandrovsk or Oleksandrivsk until 1921, is a city in southeast Ukraine, situated on the banks of the Dnieper River. It is the administrative centre of Zaporizhzhia Oblast. Zaporizhzhia has a population of 710,052.