Gradiček families are Croats and they are mostly from Ivanec area. In the past century, relatively most of Croatian residents bearing this family name were born in Ivanec area and in Vrbovec.
Prevalence
About 70 people with faimily name Gradiček live in Croatia today, in 30 households. There were 70 of them in the middle of the past century, and their number remains constant. They are located in 6 Croatian counties, in 9 cities and 15 other places, mostly in Luka (10), Selnik in Ivanec area (<10), Zagreb (<10), Ivanic-Grad (<10), and in Calinec in Ivanec area (<10).
Outside Croatia
Family name Gradiček 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.