In Croatia, Jerin families are generally Croats (from Pula ), rarely Italians (also from Pula ). In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and Pula.
Prevalence
About 10 people with faimily name Jerin live in Croatia today, in 6 households. There were 20 of them in the middle of the past century, and their number halved. They are located in three Croatian cities only: in Zagreb (<10), Pula (<5), and in Kastel Gomilica (<5).