Trzcianka-Kolonia (till December 31, 2001 as at Kolonia Trzcianka) is a colony in the administrative district of Gmina Osiek, within Staszów County, Świętokrzyskie Voivodeship, in south-central Poland. It lies approximately south-west of Osiek, south-east of Staszów, and south-east of the regional capital Kielce.
The village has a population of 89.
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