In Croatia, Steinbauer families are Croats (from Middle Bosnia ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Middle Bosnia (Sarajevo area).
Prevalence
About 20 people with faimily name Steinbauer live in Croatia today, in 11 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in one Croatian city only, in Zagreb (20).
Outside Croatia
Family name Steinbauer is present in 20 countries worldwide. The family name "Steinbauer " is used by some 2000 people in Germany , about 2000 in Austria , and some 900 people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.