Only a few people with faimily name Koštešić live in Croatia today, in households. They are located in only one small Croatian place, in Kavran in Pula area (<5).
Outside Croatia
Family name Koštešić is present in five countries on three continents. The family name "Kostesic " is used by small number of people in the United States and small number in Australia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.