Niksowizna is a village in the administrative district of Gmina Kolno, within Kolno County, Podlaskie Voivodeship, in north-eastern Poland.
According to the 1921 census, the village was inhabited by 217 people, among whom 204 were Roman Catholic, 7 Evangelical, and 6 Mosaic. At the same time, 211 inhabitants declared Polish nationality, and 6 were Jewish. There were 47 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, s. 43.
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