Željko is a male name, in Croatia almost exclusively Croatian. It is one of the most common names (among the top hundred) in Croatia, with over thirty thousand namesakes living there.
The relative popularity of names Željko in Croatia
The name Željko was the most popular from years 1960 to 1967. The peak year was 1960. It was the least popular from years 1998 to 2008.
Name Željko is relatively more common in the north of the country. Most of the persons named Željko live in the following cities and municipalities: Zagreb (over eight thousand), Split (over a thousand), Osijek (over a thousand). Relatively speaking, the city with the highest percentage of namesakes is Podcrkavlje (1.65% of total population).
In the sources analysed in the project Acta Croatica so far, the name is mentioned about a thousand times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.