In Croatia, Gereš families are Croats (from Zagreb ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Osijek.
Prevalence
About 40 people with faimily name Gereš live in Croatia today, in 20 households. There were 30 of them in the middle of the past century, and their number increased by 50 percent. They are only located in in 6 Croatian cities and four other places, mostly in Zagreb (25), Velika Gorica (<10), Cepin in Osijek area (<5), Strmec in Samobor area (<5), and in Sesvete (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.