Jadanić families are Croats and they are mostly from Ludbreg. In the past century, relatively most of Croatian residents bearing this family name were born in Ludbreg and Koprivnica.
Prevalence
About 80 people with faimily name Jadanić live in Croatia today, in 40 households. There were 80 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 11 other places, mostly in Ludbreg (15), Peteranec in Koprivnica area (10), Novska (<10), Zagreb (<10), and in Koprivnica (<10).
Outside Croatia
Family name Jadanić 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 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.