In Croatia, Penić-Ivanko families are Croats (from Jastrebarsko area ). In the past century, relatively most of Croatian residents bearing this family name were born in Karlovac and in Jastrebarsko area.
Prevalence
About 30 people with faimily name Penić-Ivanko live in Croatia today, in 11 households. There were 30 of them in the middle of the past century, and their number remains constant. They are located in only five naselja i to in Krasic (15) and Brezaric (<10) in Jastrebarsko area, Zagreb (<10), Jastrebarsko (<5), and in Ivanecki Vrhovec (<5).
Outside Croatia
Family name Penić-Ivanko 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 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.