In Croatia, Botkuljak families are predominantly Slovaks (from Nasice ), rarely Croats (from Nasice area ). In the past century, relatively most of Croatian residents bearing this family name were born in Nasice and Osijek.
Prevalence
About 30 people with faimily name Botkuljak live in Croatia today, in 9 households. There were 10 of them in the middle of the past century, and their number tripled. They are located in only five naselja i to in Jelisavac (<10), Breznica Nasicka in Nasice area (<10), Osijek (<10), Zagreb (<5), and in Nasice (<5).
Outside Croatia
Family name Botkuljak is present in this form only in Croatia.