Hamer families are mainly Croats and they are mostly from Prelog area , rarely Germans. In the past century, relatively most of Croatian residents bearing this family name were born in Mursko Sredisce area and in Cakovec.
Prevalence
About 160 people with faimily name Hamer live in Croatia today, in 70 households. There were 130 of them in the middle of the past century, and their number increased by 20 percent. They are located in 10 Croatian counties, in 15 cities and 24 other places, mostly in Cakovec (30), Zagreb (10), Gornji Koncovcak in Mursko Sredisce area (<10), Strukovec (<10), and in Drnis (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.