Kostar (Kostana) is recorded in the Ottomandefter of 1583 as a village in the Sanjak of Delvina with a total of 178 recorded male representatives, 150 of which were household heads and the remaining 28 being bachelors. The overwhelming majority of anthroponymy recorded in the settlement belonged to the Albanian onomastic sphere (e.g., Gjon Pjetri, Gjin Pali, Dedë Bardhi, Lekë Kola), with a minority bearing general Christian personal names - some of which belonged to the Greek Orthodox sphere (e.g., Jano Dhimo, Andrea Dhima, Dhimo Ilia). Two Muslims were also recorded among the inhabitants of the village: Murat Gjini, and Hasan Murati.[4]
According to Ottoman statistics, the village had 86 inhabitants in 1895.[5] The village had 328 inhabitants in 1993, all ethnically Greeks.[3]
^Μιχάλης Κοκολάκης, "Η τουρκική στατιστική της Ηπείρου στο Σαλναμέ του 1895" στο Βασίλης Παναγιωτόπουλος, Λεωνίδας Καλλιβρετάκης, Δημήτρης Δημητρόπουλος, Μιχάλης Κοκολάκης και Ευδοκία Ολυμπίτου (επιμ.), Πληθυσμοί και οικισμοί του ελληνικού χώρου. Ιστορικά μελετήματα, Ινστιτούτο Νεοελληνικών Ερευνών/Εθνικό Ίδρυμα Ερευνών, Athens 2003, p. 287
1 Includes localities with a substantial ethnic Greek population, or otherwise with any kind of cultural or other type of significance, historical or current, for the Greek minority in Albania. 2 Includes individuals not necessarily of Greek ethnicity but with important contributions to Greek civilization.