In Croatia, Aleks families are Croats (from Jastrebarsko ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Samobor.
Prevalence
Only a few people with faimily name Aleks live in Croatia today, in two households only. They are located in two Croatian cities only, in Jastrebarsko (<5) and Zagreb (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1927 in source Emigration Commission Zagreb.