In Croatia, Trešćec families are Croats (from Middle Bosnia ). In the past century, relatively most of Croatian residents bearing this family name were born in Koprivnica and Zagreb.
Prevalence
About 30 people with faimily name Trešćec live in Croatia today, in 18 households. They are located in 7 Croatian counties, in 8 cities and 9 other places, mostly in Zagreb (15), Reka (<10), Koprivnica (<10), Mokosica (<5), and in Zdralovi (<5).
Outside Croatia
Family name Trešćec is present in this form only in Croatia.