Kupljensko () is a village in central Croatia, in the municipality of Vojnić, Karlovac County. It is connected by the D216 highway.
Demographics According to the 2011 census, the village of Kupljensko has 317 inhabitants. This represents 61.20% of its pre-war population according to the 1991 census.
The 1991 censusIzdanje Državnog zavoda za statistiku RH: Narodnosni sastav stanovništva RH od 1880-1991. godine. recorded that 97.68% of the village population were ethnic Serbs (506/518), 0.77% were Yugoslavs (4/518), 0.39% were Croats (2/518) and 1.16% were Bosniaks (6/518).
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