Osmola is a village in the administrative district of Gmina Dziadkowice, within Siemiatycze County, Podlaskie Voivodeship, in north-eastern Poland.
According to the 1921 census, the village was inhabited by 418 people, among whom 401 were Roman Catholic, 7 Orthodox, 1 Greek Catholic, 1 Evangelical and 8 Mosaic. At the same time, 410 inhabitants declared Polish nationality, 8 Jewish. There were 81 residential buildings in the village.Skorowidz miejscowości Rzeczypospolitej Polskiej: opracowany na podstawie wyników pierwszego powszechnego spisu ludności z dn. 30 września 1921 r. i innych źródeł urzędowych., t. T. 5, województwo białostockie, 1924, p. 14.
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