Gudan families are Croats and they are mostly from Donja Stubica. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Donja Stubica.
Prevalence
About 90 people with faimily name Gudan live in Croatia today, in 40 households. There were 100 of them in the middle of the past century, and their number decreased by 0 percent. They are located in four Croatian counties, in 6 cities and 10 other places, mostly in Zagreb (25), Donja Stubica (15), Kriz in Ivanic-Grad area (10), Hrusevec (10), and in Lepa Ves (<10).
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.