Kalem families are Croats and they are mostly from Doboj area , Bosnia. In the past century, relatively most of Croatian residents bearing this family name were born in Doboj, Bosnia (Doboj area) and in Middle Bosnia (Gornji Vakuf area). In Dragalovci in Doboj area, BiH every tenth inhabitant had the family name Kalem.
Prevalence
About 220 people with faimily name Kalem live in Croatia today, in 90 households. They are located in the most of Croatian counties, in 27 cities and 35 other places, mostly in Zagreb (35), Zivaja in Hrvatska Kostajnica area (25), Rijeka (15), Belisce (10), and in Radovanci in Pozega area (10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1929 in source Emigration Commission Zagreb.