In Croatia, Jendričko families are almost entirely Croats (from Sisak ), very rarely Hungarians. In the past century, relatively most of Croatian residents bearing this family name were born in Sisak and in Pleternica area. In Donje Komarevo in Sisak every tenth inhabitant had the family name Jendričko.
Prevalence
About 30 people with faimily name Jendričko live in Croatia today, in 18 households. There were 40 of them in the middle of the past century, and their number decreased by 30 percent. They are only located in in 6 Croatian cities and two other places, mostly in Donje Komarevo (10), Vinkovci (<10), Zagreb (<10), Sisak (<10), and in Petrinja (<5).
Outside Croatia
Family name Jendričko (including: Jendricko , Jendryczko ) is present in four countries.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.