Kesak 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 Zlatar area and in Kutina. In Vojnovec Loborski in Zlatar area every ninth inhabitant had the family name Kesak.
Prevalence
About 90 people with faimily name Kesak live in Croatia today, in 40 households. There were 120 of them in the middle of the past century, and their number decreased by 30 percent. They are located in 8 Croatian counties, in 6 cities and 15 other places, mostly in Lobor in Zlatar area (25), Kutina (15), Zagreb (10), Velika Ludina in Cazma area (<10), and in Borkovec (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.