In Croatia, Židar families are Croats (from Valpovo area ). In the past century, relatively most of Croatian residents bearing this family name were born in Osijek area and in Vrlika.
Prevalence
Only a few people with faimily name Židar live in Croatia today, in one household only. There were 10 of them in the middle of the past century, and their number decreased significantly. They are located in only one small Croatian place, in Petrijevci in Valpovo area (<5).
Outside Croatia
Family name Židar (including: Zidar , Zhaydar ) is present in 24 countries worldwide. The family name "Zidar " is used by some 400 people in the United States , about 100 in Argentina , and some 60 people in Canada.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.