Ujdur families are Croats and they are mostly from Opuzen area. In the past century, relatively most of Croatian residents bearing this family name were born in Metkovic and Vrgorac. In Krvavac in Opuzen area every ninth inhabitant had the family name Ujdur.
Prevalence
About 260 people with faimily name Ujdur live in Croatia today, in 90 households. There were 180 of them in the middle of the past century, and their number increased by 50 percent. They are only located in in 11 Croatian cities and 13 other places, mostly in Metkovic (45), Prapatnice (30), Krvavac in Opuzen area (25), Gradac in Ploce area (20), and in Zagreb (15).
Outside Croatia
Family name Ujdur is present in 13 countries worldwide. "Hujdur " is used by small number of people in the Netherlands , small number in Switzerland , and 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.