In Croatia, Lajko families are mainly Hungarians (from Ilok area ), less frequently Croats (also from Ilok area ), and very rarely Czechs (from Velika Gorica ). In the past century, relatively most of Croatian residents bearing this family name were born in Ilok area and in Osijek.
Prevalence
About 30 people with faimily name Lajko live in Croatia today, in 11 households. There were 40 of them in the middle of the past century, and their number decreased by 40 percent. They are located in four Croatian counties, in one city and 6 other places, mostly in Cakovci (15) and Tompojevci (<10) in Ilok area, Velika Gorica (<5), Dalj in Vinkovci area (<5), and in Fazana (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.