In Croatia, Rieder families are Croats (from Orahovica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Orahovica area and in Nova Gradiska.
Prevalence
Only a few people with faimily name Rieder live in Croatia today, in one household only. They are located in one Croatian city only, in Kutjevo in Orahovica area (<10).
Outside Croatia
Family name Rieder is present in 47 countries worldwide. The family name "Rieder " is used by some 10000 people in Germany , about 4000 in the United States , and some 3000 people in Austria.
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.