In Croatia, Plasajec families are Croats (from Ivanec area ). In the past century, relatively most of Croatian residents bearing this family name were born in Ivanec area and in Zagreb.
Prevalence
About 50 people with faimily name Plasajec live in Croatia today, in 20 households. There were 70 of them in the middle of the past century, and their number decreased by 30 percent. They are located in threee Croatian counties, threee cities and 6 other places, mostly in Zagreb (10), Varazdin (<10), in Calinec (<10) and Vinica (<10) in Ivanec area, and in Osijek (<10).
Outside Croatia
Family name Plasajec is present in two countries on two continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1927 in source Emigration Commission Zagreb.