Tupčina, together with Donji Oštrc and Gornji Oštrc form the settlement (naselje) of Oštrc, and belong to the municipality of Žumberak.
Tupčina also includes the hamlets: Duralije i Jankovići.
Tupčina had 49 inhabitants according to the census in 2011.
Tupčina belongs to the parish of Oštrc, which was founded in 1827.
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