Trkulja families are mainly Serbs and they are mostly from Glina area , whereas often Croats (from Petrinja ). In the past century, relatively most of Croatian residents bearing this family name were born in Glina area and in Zagreb. In Mačkovo Selo in Petrinja every second inhabitant had the family name Trkulja.
Prevalence
About 580 people with faimily name Trkulja live in Croatia today, in 290 households. There were 1000 of them in the middle of the past century, and their number decreased by 40 percent. They are located in almost all Croatian counties, in 39 cities and 68 other places, mostly in Zagreb (105), Rijeka (40), Petrinja (25), Karlovac (25), and in Imsovac in Daruvar area (25).
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.