Gucek families are Croats and they are mostly from Djurdjevac area. In the past century, relatively most of Croatian residents bearing this family name were born in Djurdjevac area and in Virovitica.
Prevalence
About 60 people with faimily name Gucek live in Croatia today, in 30 households. There were 40 of them in the middle of the past century, and their number increased by 70 percent. They are located in 7 Croatian counties, in 8 cities and 8 other places, mostly in Pitomaca in Djurdjevac area (25), Zagreb (10), Otrovanec in Djurdjevac area (<10), Grabovci (<10), and in Bjelovar (<10).
Outside Croatia
Family name Gucek (including: Guzek , Guchek ) is present in 27 countries worldwide. "Guzek " is used by some 4000 people in Poland , about 600 in the United States , and some 100 people in Germany.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.