Pilko families are Croats and they are mostly from Klanjec area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Klanjec area.
Prevalence
About 100 people with faimily name Pilko live in Croatia today, in 50 households. There were 130 of them in the middle of the past century, and their number decreased by 20 percent. They are located in the most of Croatian counties, in 16 cities and 9 other places, mostly in Zagreb (60), Ravno Brezje in Pregrada area (10), Jalsevec Breski (<10), Bisag in Novi Marof area (<10), and in Rijeka (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.