Kojca is the oldest of the hamlets comprising Bukovo. In 1652 it was mentioned as the seat of a district that also included Bukovo, Krtečne, Žabže, and Selc. Most of the hamlet of Selc burned in 1935 because of a lightning strike. During the Second World War, German forces burned two houses and a hayrack in Bukovo and looted the village on November 1, 1943. The hamlet of Žabže was burned on June 10, 1944; during the attack, three men were killed and four women burned to death.