In Croatia, Piler families are Croats (from Zupanja area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zupanja area and in Djakovo.
Prevalence
About 30 people with faimily name Piler live in Croatia today, in 12 households. There were 50 of them in the middle of the past century, and their number decreased by 50 percent. They are located in 9 Croatian counties, in 7 cities and threee other places, mostly in Zagreb (<10), Viskovci in Djakovo area (<10), Cerna in Zupanja area (<5), Juricani (<5), and in Slatina (<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.