In Croatia, Gajdašić families are Croats (from Srijem, Vojvodina ). In the past century, relatively most of Croatian residents bearing this family name were born in Srijem, Vojvodina and in Vinkovci.
Prevalence
About 40 people with faimily name Gajdašić live in Croatia today, in 16 households. There were 10 of them in the middle of the past century, and their number multiplied. They are located in 8 Croatian counties, in 7 cities and 7 other places, mostly in Budimci in Nasice area (<10), Bapska (<10), Slatina (<10), Crikvenica (<10), and in Spanat in Slatina area (<10).
Outside Croatia
Family name Gajdašić is present in this form only in Croatia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.