In Croatia, Kerec families are generally Croats (from Varazdin ), very rarely Slovenes (from Slovenia ). In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and Zagreb.
Prevalence
About 20 people with faimily name Kerec live in Croatia today, in 10 households. There were 30 of them in the middle of the past century, and their number decreased by 40 percent. They are only located in in 6 Croatian cities, mostly in Zagreb (<10), Rijeka (<5), Varazdin (<5), Velika Gorica (<5), and in Trinajstici (<5).
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.