 During the World War I, one third of village population was mobilized to war leading to hardship for the rest of the settlement.In 1923 Myronivka became an administrative center of the newly created Myronivka Raion which was carved out of Kozyn and Karapyshi volosts.In 1923 the local railroad network was expanded after adding a railway branch between Myronivka and Kaharlyk.