In Croatia, Vinceljak families are Croats (from Krapina area ). In the past century, relatively most of Croatian residents bearing this family name were born in Krapina area and in Krapina.
Prevalence
About 40 people with faimily name Vinceljak live in Croatia today, in 17 households. There were 60 of them in the middle of the past century, and their number decreased by 30 percent. They are only located in two Croatian cities and 11 other places, mostly in Mihaljekov Jarek (15), Bregi Radobojski in Krapina area (10), Gornji Prnjarovec in Ivanic-Grad area (<10), Zagreb (<5), and in Kriz in Ivanic-Grad area (<5).
Outside Croatia
Family name Vinceljak 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 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.