In Croatia, Surjak families are Croats (from Ivanec ). In the past century, relatively most of Croatian residents bearing this family name were born in Ivanec and Varazdin.
Prevalence
About 30 people with faimily name Surjak live in Croatia today, in 12 households. There were 60 of them in the middle of the past century, and their number halved. They are located in only four naselja i to in Ivanec (25), Vidovec in Varazdin area (<10), Zagreb (<5), and in Lancic (<5).
Outside Croatia
Family name Surjak (including: Suryak , Suriak and Shuryak ) is present in 14 countries worldwide.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1942 in source Phone Directory of the Independent State of Croatia 1942.