In Croatia, Tonec families are Croats (from Sisak ). In the past century, relatively most of Croatian residents bearing this family name were born in Sisak.
Prevalence
About 20 people with faimily name Tonec live in Croatia today, in five households only. There were 20 of them in the middle of the past century, and their number remains constant. They are located in only two naselja i to in Sisak (15) and Veliko Svinjicko (<5).
Outside Croatia
Family name Tonec (including: Tonezzi , Tonez ) is present in 6 countries on three continents. "Tonez " is used by few people in the United States.