About 1300 people with faimily name Leko live in Croatia today, in 520 households. There were 210 of them in the middle of the past century, and their number multiplied. They are located in almost all Croatian counties, in 52 cities and 81 other places, mostly in Zagreb (455), Osijek (130), Split (80), Nustar in Vinkovci area (65), and in Imotski (65).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1930 in source Emigration Commission Zagreb.