Išasegi families are Croats and they are mostly from Djakovo. In the past century, relatively most of Croatian residents bearing this family name were born in Djakovo and Rijeka.
Prevalence
About 70 people with faimily name Išasegi live in Croatia today, in 20 households. There were 30 of them in the middle of the past century, and their number more than doubled. They are located in only four naselja i to in Djakovo (45), Ivanovci Gorjanski (30), Zagreb (<5), and in Satnica Djakovacka in Djakovo area (<5).
Outside Croatia
Family name Išasegi is present in this form only in Croatia.
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.