In Croatia, Ključariček families are Croats (from Donja Stubica ). In the past century, relatively most of Croatian residents bearing this family name were born in Velika Gorica and Donja Stubica.
Prevalence
About 40 people with faimily name Ključariček live in Croatia today, in 20 households. There were 80 of them in the middle of the past century, and their number halved. They are located in 6 Croatian counties, in 7 cities and 8 other places, mostly in Zagreb (10), Donja Stubica (<10), Velika Gorica (<10), Donja Podgora (<5), and in Matulji in Opatija area (<5).
Outside Croatia
Family name Ključariček is present in four countries on three continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.