In Croatia, Romanjek families are almost entirely Croats (from Pleternica area ), very rarely Slovaks (from Novska area ). In the past century, relatively most of Croatian residents bearing this family name were born in Pleternica area and in Zagreb.
Prevalence
About 30 people with faimily name Romanjek live in Croatia today, in 12 households. There were 30 of them in the middle of the past century, and their number remains constant. They are located in 6 Croatian counties, four cities and 5 other places, mostly in Slavonski Brod (<10), Lipovljani in Novska area (<10), Visnjevac (<5), Josipovac (<5), and in Karlovac (<5).
Outside Croatia
Family name Romanjek is present in 6 countries on three continents.