In Croatia, Cuvaj families are Croats (from Djakovo area ). In the past century, relatively most of Croatian residents bearing this family name were born in Bjelovar and in Bjelovar area.
Prevalence
About 40 people with faimily name Cuvaj live in Croatia today, in 20 households. There were 100 of them in the middle of the past century, and their number decreased significantly. They are only located in in 6 Croatian cities and 8 other places, mostly in Bjelovar (<10), Strizivojna in Djakovo area (<10), Ivanic-Grad (<10), Ivanska in Bjelovar area (<10), and in Velika Hrastilnica in Ivanic-Grad area (<10).
Outside Croatia
Family name Cuvaj (including: Cuvay , Cuwai , Zuwai and Zuway ) is present in 10 countries on four continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.