Japec families are Croats and they are mostly from Zlatar area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Donja Stubica area.
Prevalence
About 180 people with faimily name Japec live in Croatia today, in 80 households. There were 200 of them in the middle of the past century, and their number decreased by 10 percent. They are located in the most of Croatian counties, in 18 cities and 29 other places, mostly in Zagreb (40), Karlovac (15), Susobreg in Zlatar area (15), Kutina (10), and in Sesvete (10).
Outside Croatia
Family name Japec is present in five countries on two continents. The family name "Japec " is used by small number of people in the United States. "Yapez " is used by few people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.