The statistical characteristics of O. Zabuzhko’s idiostyle have been described in the article. The research has been carried out on the subcorpus by Zabuzhko, Andrukhovych, subcorpus of prose by male authors, subcorpus of prose by female authors, and Grac v.15 corpora served as the source of the research material. Such characteristics of O. Zabuzhko ’s idiolect as the length of sentences and words, frequency of use of punctuation marks, parts of speech, and index of lexical diversity, were studied. The obtained results were compared with other authors, and the peculiarity of the idiostyle was determined. According to the search results in the text corpora, it was found that a characteristic feature of O. Zabuzhko’s idiostyle is the length of sentences, which is, on average, 58.5% longer than her contemporaries, and the presence of punctuation marks. In some places, the indicator is 70% longer. Statistical significance was tested using Student’s t-test.