In Croatia, Jelković families are almost entirely Croats (from Glina area ), barely Czechs (from Zagreb ). In the past century, relatively most of Croatian residents bearing this family name were born in Glina area and in Glina.
Prevalence
About 50 people with faimily name Jelković live in Croatia today, in 20 households. There were 70 of them in the middle of the past century, and their number decreased by 30 percent. They are located in 6 Croatian counties, in 8 cities and 5 other places, mostly in Hrvatsko Selo in Glina area (15), Zagreb (10), Sisak (<10), Slavonski Brod (<10), and in Jazvenik (<5).
Outside Croatia
Family name Jelković (including: Jelkovic , Yelkovich ) is present in four countries on two continents. "Yelkovich " is used by small number of people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1933 in source Emigration Commission Zagreb.