In Croatia, Tam families are Croats (from Djurdjevac area ). In the past century, relatively most of Croatian residents bearing this family name were born in Djurdjevac area.
Prevalence
Only a few people with faimily name Tam live in Croatia today, in three households only. They are located in two Croatian counties, in one city and another small place , mostly in Varazdin (<5) and Pitomaca in Djurdjevac area (<5).