Valjan families are Croats and they are mostly from middle Bosnia. In the past century, relatively most of Croatian residents bearing this family name were born in Middle Bosnia (Travnik area) and in Rijeka. In Paklarevo in Middle Bosnia every sixth inhabitant had the family name Valjan.
Prevalence
About 190 people with faimily name Valjan live in Croatia today, in 80 households. There were 80 of them in the middle of the past century, and their number more than doubled. They are located in the most of Croatian counties, in 23 cities and 31 other places, mostly in Rijeka (25), Zagreb (20), Djakovo (15), Zastenice in Rijeka area (15), and in Knin (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.