In Croatia, Cergonja families are predominantly Croats (from Opatija area ), rarely Slovenes (also from Opatija area ). In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and in Slovenia.
Prevalence
Only a few people with faimily name Cergonja live in Croatia today, in three households only. They are located in only two Croatian places: in Sapjane in Opatija area (<10) and Rijeka (<5).
Outside Croatia
Family name Cergonja is present in three countries on two continents.