Kolomyia, formerly known as Kolomea, is a city located on the Prut River in Ivano-Frankivsk Oblast in western Ukraine. It serves as the adminiā¦Kolomyia, formerly known as Kolomea, is a city located on the Prut River in Ivano-Frankivsk Oblast in western Ukraine. It serves as the administrative centre of Kolomyia Raion, hosting the administration of Kolomyia urban hromada. The population is 60,821.