In Croatia, Ivo families are predominantly Croats (from Djakovo area ), rarely Hungarians (from Osijek area ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Osijek and in Osijek area.
Prevalence
About 20 people with faimily name Ivo live in Croatia today, in 8 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in only four naselja i to in Osijek (20), Laslovo in Osijek area (<10), Vladislavci in Djakovo area (<5), and in Sarsoni in Rijeka area (<5).
Outside Croatia
Family name Ivo (including: Iwo , Yvo ) is present in 56 countries worldwide. "Iwo " is used by some 200 people in Indonesia and small number in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over twenty times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.