In Croatia, Dečko families are generally Croats (from Vrbovec area ), very rarely Slovenes (from Slovenia ). In the past century, relatively most of Croatian residents bearing this family name were born in Vrbovec area and in Zagreb.
Prevalence
About 20 people with faimily name Dečko live in Croatia today, in 9 households. There were 50 of them in the middle of the past century, and their number decreased significantly. They are only located in four Croatian cities and 6 other places, mostly in Kordusevci in Slavonski Brod area (<10), Krecaves (<5), Gornja Dubrava in Cakovec area (<5), Donji Tkalec (<5), and in Sesvete (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.