Klapan families are Croats and they are mostly from Novigrada. In the past century, relatively most of Croatian residents bearing this family name were born in Novigrad and Zadar.
Prevalence
About 230 people with faimily name Klapan live in Croatia today, in 90 households. There were 40 of them in the middle of the past century, and their number multiplied. They are located in 6 Croatian counties, in 11 cities and 7 other places, mostly in Pridraga in Novigrad Area in Dalmatia (95), Zadar (50), Zagreb (30), Rijeka (30), and in Paljuv in Novigrad Area in Dalmatia (20).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 2007 in source Encyclopaedia of Croatian Surnames.