In Croatia, Ključarićek families are Croats (from Donja Stubica ). In the past century, relatively most of Croatian residents bearing this family name were born in Donja Stubica and Zagreb.
Prevalence
About 20 people with faimily name Ključarićek live in Croatia today, in 15 households. There were 10 of them in the middle of the past century, and their number doubled. They are located in only five naselja i to in Donja Stubica (10), Pustodol (<10), Zagreb (<5), Donja Podgora (<5), and in Oroslavje (<5).
Outside Croatia
Family name Ključarićek is present in four countries on three continents.