In Croatia, Griguljak families are Croats (from Slatina area ). In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and in Slatina area. In Mačkovac in Slatina area every thirtieth inhabitant had the family name Griguljak.
Prevalence
Only a few people with faimily name Griguljak live in Croatia today, in three households only. There were 10 of them in the middle of the past century, and their number remains constant. They are located in three Croatian cities only: in Rijeka (<10), Slatina (<5), and in Buje (<5).
Outside Croatia
Family name Griguljak is present in three countries.