In Croatia, Ulle families are Croats (from Samobor ). In the past century, relatively most of Croatian residents bearing this family name were born in Samobor.
Prevalence
Only a few people with faimily name Ulle live in Croatia today, in two households only. There were 10 of them in the middle of the past century, and their number decreased significantly. They are located in one Croatian city only, in Samobor (<5).
Outside Croatia
Family name Ulle (including: Hulle , Hülle and Ulleh ) is present in 30 countries worldwide. The family name "Ulle " is used by some 300 people in Brazil , about 300 in the United States , and some 300 people in Indonesia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1926 in source Emigration Commission Zagreb.