In Croatia, Bajn families are Croats (from Middle Bosnia ). In the past century, relatively most of Croatian residents bearing this family name were born in Middle Bosnia (Sarajevo area).
Prevalence
About 10 people with faimily name Bajn live in Croatia today, in three households only. They are located in three Croatian cities only: in Split (<5), Nova Mokosica (<5), and in Krivodol in Sinj area (<5).
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.