Kosmat families are Croats and they are mostly from Zapresic area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Zapresic area.
Prevalence
About 80 people with faimily name Kosmat live in Croatia today, in 30 households. There were 100 of them in the middle of the past century, and their number decreased by 10 percent. They are located in 6 Croatian counties, in 8 cities and 7 other places, mostly in Zagreb (20), Pustodol (20), Strmec Stubicki in Oroslavje area (15), Krapina (<5), and in Stubicke Toplice in Oroslavje area (<5).
Outside Croatia
Family name Kosmat (including: Koshmat , Kosmath ) is present in 8 countries on two continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.