In Croatia, Spirin families are Croats (from Delnice ). 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 Spirin 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 two Croatian cities only, in Kuzelj (<5) and Zagreb (<5).