In Croatia, Pregl families are Croats (from Pula area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Pula.
Prevalence
About 20 people with faimily name Pregl live in Croatia today, in 9 households. There were 10 of them in the middle of the past century, and their number doubled. They are located in two Croatian counties, in one city and another small place , mostly in Zagreb (15) and Medulin in Pula area (<5).
Outside Croatia
Family name Pregl is present in 9 countries on three continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.