In Croatia, Kazimir families are predominantly Croats (from Beli Manastir ), rarely Hungarians (from Beli Manastir area ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Osijek and in Beli Manastir area.
Prevalence
About 10 people with faimily name Kazimir live in Croatia today, in five households only. There were 10 of them in the middle of the past century, and their number remains constant. They are located in only four naselja i to in Branjin Vrh (<10), Knezevo in Beli Manastir area (<5), Crikvenica (<5), and in Okunscak in Dugo Selo area (<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.