Pilar families are Croats and they are mostly from Porec. In the past century, relatively most of Croatian residents bearing this family name were born in Porec and Pula. In Kaldanija in Buje every sixth inhabitant had the family name Pilar.
Prevalence
About 60 people with faimily name Pilar live in Croatia today, in 30 households. There were 100 of them in the middle of the past century, and their number decreased by 30 percent. They are located in four Croatian counties, in 7 cities and 9 other places, mostly in Porec (20), Pula (<10), Medulin in Pula area (<10), Baderna (<5), and in Umag (<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.