In Croatia, Sker families are Italians (from Buzet area ).
Prevalence
Only a few people with faimily name Sker live in Croatia today, in one household only. There were 10 of them in the middle of the past century, and their number decreased significantly. They are located in only one small Croatian place, in Oprtalj in Buzet area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1927 in source Emigration Commission Zagreb.