Opsenica families are often Serbs and they are mostly from Slunj area , less frequently Croats. In the past century, relatively most of Croatian residents bearing this family name were born in Slunj area and in Ogulin.
Prevalence
About 90 people with faimily name Opsenica live in Croatia today, in 50 households. There were 160 of them in the middle of the past century, and their number decreased by 40 percent. They are located in the most of Croatian counties, in 13 cities and 10 other places, mostly in Zagreb (15), Zadar (15), Rastevic (10), and in Lapat (10) and Plaski (<10) in Slunj area.
Outside Croatia
Family name Opsenica is present in 8 countries on three continents. The family name "Opsenica " is used by small number of people in Russian Federation , small number in Canada , and small number of people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1923 in source Emigration Commission Zagreb.