In Croatia, Kalađija families are Croats (from Bjelovar area ). In the past century, relatively most of Croatian residents bearing this family name were born in Bjelovar and in Bjelovar area.
Prevalence
About 30 people with faimily name Kalađija live in Croatia today, in 11 households. There were 30 of them in the middle of the past century, and their number remains constant. They are located in threee Croatian counties, two cities and 6 other places, mostly in Medjuraca in Bjelovar area (10), Bjelovar (<10), Vucetinec in Cakovec area (<10), Kozarevac Racanski in Bjelovar area (<5), and in Visnjevac (<5).
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.