In Croatia, Mastin families are Croats (from Ivanec ). In the past century, relatively most of Croatian residents bearing this family name were born in Varazdin and Ivanec.
Prevalence
About 20 people with faimily name Mastin live in Croatia today, in five households only. They are located in only four naselja i to in Zeljeznica (10), Petrovina Turopoljska (<5), Ivanecka Zeljeznica (<5), and in Zagreb (<5).
Outside Croatia
Family name Mastin (including: Masstin , Masthien ) is present in 32 countries worldwide. The family name "Mastin " is used by some 4000 people in the United States , about 400 in France , and some 200 people in Canada.
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.