In Croatia, Gereg families are Hungarians (from Vinkovci area ). In the past century, relatively most of Croatian residents bearing this family name were born in Vinkovci area.
Prevalence
Only a few people with faimily name Gereg live in Croatia today, in one household only. There were 20 of them in the middle of the past century, and their number decreased significantly. They are located in only one small Croatian place, in Aljmas in Vinkovci area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1942 in source Phone Directory of the Independent State of Croatia 1942.