In January 2013 the population was 1846 people.[7]
Until 18 July 2020, Kozliv belonged to Kozova Raion. The raion was abolished in July 2020 as part of the administrative reform of Ukraine, which reduced the number of raions of Ternopil Oblast to three. The area of Kozova Raion was merged into Ternopil Raion.[8][9] On 26 January 2024, a new law entered into force which abolished the urban-type settlement status, and Kozliv became a rural settlement.[10]
^ abcКозлов // Большая Советская Энциклопедия. / под ред. А. М. Прохорова. 3-е изд. Т.12. М., «Советская энциклопедия», 1973.
^ abКозлов // Большая Советская Энциклопедия. / редколл., гл. ред. Б. А. Введенский. 2-е изд. том 21. М., Государственное научное издательство «Большая Советская энциклопедия», 1953. стр.544-545