In Croatia, Jelenc families are almost entirely Croats (from Cabar ), barely Slovenes (from Zagreb ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Rijeka.
Prevalence
About 70 people with faimily name Jelenc live in Croatia today, in 30 households. There were 80 of them in the middle of the past century, and their number decreased by 10 percent. They are only located in in 10 Croatian cities and 5 other places, mostly in Zagreb (20), Slavonski Brod (10), Trsce (<10), Varazdin (<5), and in Kastav (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.