Frljužec families are Croats and they are mostly from Krapina area. In the past century, relatively most of Croatian residents bearing this family name were born in Krapina and Zagreb. In Petrovsko in Krapina area every eighth inhabitant had the family name Frljužec.
Prevalence
About 120 people with faimily name Frljužec live in Croatia today, in 50 households. There were 60 of them in the middle of the past century, and their number doubled. They are located in 6 Croatian counties and 16 other places, mostly in Petrovsko in Krapina area (35), Krapina (25), Zagreb (20), Grabovnica (10), and in Graberec in Vrbovec area (<10).
Outside Croatia
Family name Frljužec is present in this form only in Croatia.
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.