In Croatia, Koh families are generally Croats (from Srijem, Vojvodina ), very rarely Hungarians (from Backa, Vojvodina ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Bjelovar and Vukovar.
Prevalence
About 40 people with faimily name Koh live in Croatia today, in 19 households. There were 120 of them in the middle of the past century, and their number decreased significantly. They are located in the most of Croatian counties, in 11 cities and 5 other places, mostly in Bjelovar (<10), Osijek (<5), Sarengrad (<5), Zagreb (<5), and in Karlovac (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over thirty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.