In Croatia, Čerljenko families are generally Croats (from Labin ), very rarely Slovenes (from Pula ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Pula and Labin.
Prevalence
About 20 people with faimily name Čerljenko live in Croatia today, in 10 households. There were 0 of them in the middle of the past century, and their number multiplied. They are located in only four naselja i to in Labin (<10), Pula (<10), Zagreb (<5), and in Vinez (<5).
Outside Croatia
Family name Čerljenko (including: Cerlienco , Cerljenko ) is present in three countries on two continents.