In Croatia, Blotnej families are predominantly Croats (from Vukovar ), rarely Rusyns (from Zagreb ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Vukovar.
Prevalence
About 10 people with faimily name Blotnej live in Croatia today, in three households only. They are located in only threee naselja i to in Lucko (<10), Zagreb (<5), and in Vukovar (<5).
Outside Croatia
Family name Blotnej is present in five countries on three continents. "Blotney " is used by small number of people in the United States.