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At the time of the Russian Empire Census of 1897, Umansky Uyezd had a population of 320,744. Of these, 85.4% spoke Ukrainian, 11.7% Yiddish, 1.8% Russian, 0.9% Polish and 0.1% German as their native language.
-  Демоскоп Weekly - Приложение. Справочник статистических показателей