Kršek families are Croats and they are mostly from Zlatar. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Zlatar.
Prevalence
About 70 people with faimily name Kršek live in Croatia today, in 30 households. There were 120 of them in the middle of the past century, and their number decreased by 40 percent. They are located in threee Croatian counties, four cities and 5 other places, mostly in Zagreb (55), Sesvete (<10), Mala Ludina in Cazma area (<10), Kutina (<5), and in Novoselec in Ivanic-Grad area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.