In Croatia, Bursich families are Italians (from Umag ).
Prevalence
Only a few people with faimily name Bursich live in Croatia today, in two households only. There were 10 of them in the middle of the past century, and their number decreased significantly. They are located in two Croatian cities only, in Savudrija (<5) and Porec (<5).
Outside Croatia
Family name Bursich is present in 7 countries on four continents. The family name "Bursich " is used by some 70 people in the United States , about 60 in Argentina , and some 60 people in Italy.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.