In Croatia, Fattor families are predominantly Italians (from Umag ), rarely Croats (also from Umag ). In the past century, relatively most of Croatian residents bearing this family name were born in Umag and in Slovenia.
Prevalence
About 20 people with faimily name Fattor 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 only located in two Croatian cities and four other places, mostly in Basanija (<5), Pazin (<5), Petrovija (<5), Umag (<5), and in Vilanija (<5).
Outside Croatia
Family name Fattor is present in 10 countries on four continents. The family name "Fattor " is used by some 300 people in Italy , about 200 in Argentina , and some 100 people in the United States.