In Croatia, Fett families are Croats (from Virovitica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Virovitica area and in Virovitica.
Prevalence
About 30 people with faimily name Fett live in Croatia today, in 15 households. They are located and another small Croatian place , mostly in Suhopolje in Virovitica area (10), Vrbovec (<10), Koprivnica (<5), Petrinja (<5), and in Virovitica (<5).
Outside Croatia
Family name Fett is present in 34 countries worldwide. The family name "Fett " is used by some 2000 people in Germany , about 2000 in the United States , and some 1000 people in Brazil. "Phett " 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 2007 in source Encyclopaedia of Croatian Surnames.