In Croatia, Iroš families are Croats (from Sveti Ivan Zelina area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb.
Prevalence
Only a few people with faimily name Iroš live in Croatia today, in four households only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in only threee Croatian places: in Zagreb (<5), Donji Zvecaj (<5), and in Valetic in Sveti Ivan Zelina area (<5).