In Croatia, Kalanja families are mainly Croats (from Velika Gorica ), equally Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Glina and Sisak.
Prevalence
About 40 people with faimily name Kalanja live in Croatia today, in 20 households. There were 50 of them in the middle of the past century, and their number decreased by 20 percent. They are located in 6 Croatian counties, in 7 cities and 6 other places, mostly in Zagreb (<10), Novska (<10), Borovo in Vukovar area (<10), Mali Gradac (<10), and in Zakopa in Hrvatska Kostajnica area (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1927 in source Emigration Commission Zagreb.