In Croatia, Kalmar families are generally Croats (from Donji Miholjac area ), very rarely Hungarians (from Backa, Vojvodina ), and barely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Osijek and Zagreb.
Prevalence
About 70 people with faimily name Kalmar live in Croatia today, in 40 households. There were 50 of them in the middle of the past century, and their number increased by 60 percent. They are located in 9 Croatian counties, in 12 cities and 8 other places, mostly in Osijek (15), Viljevo in Donji Miholjac area (10), Zagreb (<10), Ogulin (<10), and in Pula (<10).