Blagus families are Croats and they are mostly from Prelog area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Prelog area.
Prevalence
About 460 people with faimily name Blagus live in Croatia today, in 190 households. There were 430 of them in the middle of the past century, and their number increased by 10 percent. They are located in the most of Croatian counties, in 17 cities and 41 other places, mostly in Zagreb (150), Gorican in Cakovec area (35), Donji Kraljevec in Prelog area (35), Cakovec (35), and in Sveta Marija in Prelog area (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.