In Croatia, Šoštarčić families are Croats (from Ivanic-Grad ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Ivanic-Grad. In Lijevi Dubrovčak in Ivanic-Grad every fiftieth inhabitant had the family name Šoštarčić.
Prevalence
About 20 people with faimily name Šoštarčić live in Croatia today, in 9 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in only five naselja i to in Ivanic-Grad (<10), Lijevi Dubrovcak (<10), Klostar Ivanic in Ivanic-Grad area (<5), Zapresic (<5), and in Lipovljani in Novska area (<5).
Outside Croatia
Family name Šoštarčić is present in this form only in Croatia.
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.