In Croatia, Backo families are predominantly Croats (from Djakovo area ), rarely Slovaks (also from Djakovo area ). In the past century, relatively most of Croatian residents bearing this family name were born in Djakovo area and in Djakovo.
Prevalence
Only a few people with faimily name Backo live in Croatia today, in three households only. There were 20 of them in the middle of the past century, and their number halved. They are located in only two naselja i to in Bracevci (<10) and Potnjani (<5) in Djakovo area.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over twenty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.