Metelko families are Croats and they are mostly from Zagreb. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Nova Gradiska.
About 110 people with faimily name Metelko live in Croatia today, in 50 households. There were 90 of them in the middle of the past century, and their number increased by 20 percent. They are located in the most of Croatian counties, in 10 cities and 12 other places, mostly in Zagreb (65), Slatina (<10), Sesvete (<5), Kupinecki Kraljevec (<5), and in Donja Bistra in Oroslavje area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.