In Croatia, Franz families are almost entirely Croats (from Oroslavje area ), barely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Osijek.
Prevalence
About 40 people with faimily name Franz live in Croatia today, in 20 households. There were 30 of them in the middle of the past century, and their number increased by 20 percent. They are only located in in 7 Croatian cities and four other places, mostly in Zagreb (20), Osijek (10), Donja Bistra in Oroslavje area (<5), Aljmas in Vinkovci area (<5), and in Pula (<5).
Outside Croatia
Family name Franz is present in 97 countries worldwide. The family name "Franz " is used by some 60000 people in Germany , about 20000 in the United States , and some 8000 people in Brazil.
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.