Vurdelja families can be both Croats (the family name originates from Zagreb ) and Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Gospic. In Veliki Kozinac in Duga Resa area every fourth inhabitant had the family name Vurdelja.
Prevalence
About 110 people with faimily name Vurdelja live in Croatia today, in 60 households. There were 190 of them in the middle of the past century, and their number decreased by 40 percent. They are located in the most of Croatian counties, in 13 cities and 14 other places, mostly in Zagreb (35), Veliki Kozinac in Duga Resa area (10), Osijek (10), Slatina (<10), and in Rijeka (<10).
Outside Croatia
Family name Vurdelja is present in 6 countries on two continents. The family name "Vurdelja " is used by small number of people in Poland and small number in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.