In Croatia, Lorch families are Croats (from Zagreb ).
Prevalence
Only a few people with faimily name Lorch live in Croatia today, in one household only. They are located in one Croatian city only, in Zagreb (<5).
Outside Croatia
Family name Lorch is present in 29 countries worldwide. The family name "Lorch " is used by some 4000 people in Germany , about 2000 in the United States , and some 200 people in Brazil. "Loerch " is used by some 400 people in the United States , about 300 in Germany , and small number of people in France.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over forty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.