In Croatia, Smilaj families are Croats (from Jastrebarsko ). In the past century, relatively most of Croatian residents bearing this family name were born in Jastrebarsko and Zagreb.
Prevalence
About 30 people with faimily name Smilaj live in Croatia today, in 11 households. There were 30 of them in the middle of the past century, and their number remains constant. They are located in only four naselja i to in Donji Desinec (25), Lucko (<10), Jastrebarsko (<5), and in Sveti Petar Mreznicki (<5).
Outside Croatia
Family name Smilaj is present in four countries on three continents. "Smilay " is used by small number of people in the United States.