In Croatia, Pacek families are generally Croats (from Vinkovci area ), very rarely Serbs, and barely Hungarians (from Osijek area ). In the past century, relatively most of Croatian residents bearing this family name were born in Osijek and Vinkovci.
Prevalence
About 60 people with faimily name Pacek live in Croatia today, in 20 households. There were 60 of them in the middle of the past century, and their number remains constant. They are located in 7 Croatian counties, in 7 cities and 8 other places, mostly in Osijek (20), Laslovo in Osijek area (<10), Zagreb (<10), Visnjevac (<10), and in Vinkovci (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1926 in source Emigration Commission Zagreb.