In Croatia, Mezej families are Croats (from Djakovo area ). In the past century, relatively most of Croatian residents bearing this family name were born in Djakovo and Sisak.
Prevalence
About 30 people with faimily name Mezej live in Croatia today, in 13 households. There were 20 of them in the middle of the past century, and their number increased by 60 percent. They are located in 6 Croatian counties, in 6 cities and threee other places, mostly in Zagreb (<10), Djakovo (<10), Sisak (<10), Rovinj (<5), and in Vinkovci (<5).
Outside Croatia
Family name Mezej (including: Mezei , Mezey ) is present in 38 countries worldwide. "Mezey " is used by some 800 people in Hungary , about 400 in the United States , and some 100 people in Ukraine.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.