In Croatia, Gučanac families are Croats (from Sisak area ). In the past century, relatively most of Croatian residents bearing this family name were born in Sisak.
Prevalence
Only a few people with faimily name Gučanac live in Croatia today, in one household only. There were 100 of them in the middle of the past century, and their number decreased significantly. They are located in only four naselja i to in Tisina Erdedska in Sisak area (<10), Bobovac in Hrvatska Kostajnica area (<5), Sisak (<5), and in Suvoj (<5).
Outside Croatia
Family name Gučanac is present in three countries on two continents. The family name "Gucanac " is used by small number of people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1933 in source Emigration Commission Zagreb.