Šenjug families are Croats and they are mostly from Zabok area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Lepoglava area. In Pustodol Orehovički in Lepoglava area every tenth inhabitant had the family name Šenjug.
Prevalence
About 230 people with faimily name Šenjug live in Croatia today, in 90 households. There were 170 of them in the middle of the past century, and their number increased by 40 percent. They are located in 10 Croatian counties, in 11 cities and 21 other places, mostly in Zagreb (75), Galovec Zacretski in Zabok area (25), Lepajci (15), and in Poznanovec (10) and Lug Orehovicki (10) in Lepoglava area.
Outside Croatia
Family name Šenjug is present in two countries on two continents. The family name "Senjug " is used by small number of people in the United States.
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.