Grudiček families are Croats and they are mostly from Ivanec. In the past century, relatively most of Croatian residents bearing this family name were born in Ivanec and Varazdin. In Lovrečan in Ivanec every eighth inhabitant had the family name Grudiček.
Prevalence
About 90 people with faimily name Grudiček live in Croatia today, in 40 households. There were 100 of them in the middle of the past century, and their number decreased by 10 percent. They are located in 6 Croatian counties, four cities and 11 other places, mostly in Radovan (30), Varazdin (10), Tuzno in Varazdin area (<10), Cavle in Rijeka area (<10), and in Beretinec in Varazdin area (<10).
Outside Croatia
Family name Grudiček 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 2007 in source Encyclopaedia of Croatian Surnames.