In Croatia, Plesac families are Croats (from Ozalj area ). In the past century, relatively most of Croatian residents bearing this family name were born in Ozalj area and in Slovenia.
Prevalence
About 20 people with faimily name Plesac live in Croatia today, in 8 households. There were 10 of them in the middle of the past century, and their number doubled. They are located in two Croatian counties, two cities and four other places, mostly in Zagreb (<10), in Bubnjaracki Brod (<10) and Veliki Vrh Kamanjski (<5) in Ozalj area, Ogulin (<5), and in Kamanje in Ozalj area (<5).
Outside Croatia
Family name Plesac is present in five countries on three continents. The family name "Plesac " is used by some 80 people in the United States and small number in Ecuador.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1929 in source Emigration Commission Zagreb.