In Croatia, Grđijan families are Croats (from Bjelovar area ). In the past century, relatively most of Croatian residents bearing this family name were born in Bjelovar and Zagreb. In Stara Plošćica in Bjelovar area every seventieth inhabitant had the family name Grđijan.
Prevalence
About 10 people with faimily name Grđijan live in Croatia today, in four households only. There were 10 of them in the middle of the past century, and their number remains constant. They are located in only two naselja i to in Drljanovac in Bjelovar area (15) and Velika Pisanica in Grubisno Polje area (<5).