In Croatia, Trezić families are Croats (from Virovitica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Virovitica and Bjelovar.
Prevalence
About 20 people with faimily name Trezić live in Croatia today, in 7 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in four Croatian counties and four other places, mostly in Okrugljaca in Virovitica area (10), Samobor (<10), Rijeka (<5), Klostar Podravski in Djurdjevac area (<5), and in Pobri (<5).
Outside Croatia
Family name Trezić is present in two countries on two continents. The family name "Trezic " is used by few people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.