Klopotan families are Croats and they are mostly from Novi Marof. In the past century, relatively most of Croatian residents bearing this family name were born in Varazdin and Novi Marof.
Prevalence
About 270 people with faimily name Klopotan live in Croatia today, in 110 households. There were 270 of them in the middle of the past century, and their number remains constant. They are located in the most of Croatian counties, in 14 cities and 23 other places, mostly in Presecno (125), Zagreb (30), Varazdin (10), Novi Marof (10), and in Viljevo in Donji Miholjac area (10).
Outside Croatia
Family name Klopotan is present in four countries on two continents.
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.