Pocrnja families are Croats and they are mostly from middle Bosnia. In the past century, relatively most of Croatian residents bearing this family name were born in Middle Bosnia (Bugojno area) and in Split.
Prevalence
About 190 people with faimily name Pocrnja live in Croatia today, in 80 households. There were 100 of them in the middle of the past century, and their number increased by 100 percent. They are located in the most of Croatian counties, in 25 cities and 25 other places, mostly in Split (65), Zagreb (20), Dugi Rat in Omis area (20), Djakovo (10), and in Vinkovci (<10).
Outside Croatia
Family name Pocrnja is present in 9 countries on three continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.