In Croatia, Trampuž families are predominantly Croats (from Zagreb ), rarely Slovenes (from Rijeka ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Rijeka.
Prevalence
About 10 people with faimily name Trampuž live in Croatia today, in 7 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), Rijeka (<5), and in Pula (<5).
Outside Croatia
Family name Trampuž is present in this form only in Croatia.