In Croatia, Reponj families are Croats (from Pleternica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Pleternica area and in Zagreb.
Prevalence
About 20 people with faimily name Reponj live in Croatia today, in 6 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in only four Croatian places: in Pozega (<10), Brestovac in Pozega area (<5), Sveti Djuradj (<5), and in Rusevo in Pleternica area (<5).
Outside Croatia
Family name Reponj (including: Reponi , Repony ) is present in five countries on three continents. "Repony " is used by small number of people in the United States.