Valdec families are Croats and they are mostly from Novi Marof. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Novi Marof. In Jelenščak in Novi Marof every eighth inhabitant had the family name Valdec.
Prevalence
About 100 people with faimily name Valdec live in Croatia today, in 50 households. There were 130 of them in the middle of the past century, and their number decreased by 20 percent. They are located in 9 Croatian counties, in 12 cities and 13 other places, mostly in Zagreb (40), Jelenscak (10), Varazdin (<10), Ludbreg (<10), and in Miholjacki Porec (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.