Petriček families are Croats and they are mostly from Sveti Ivan Zelina. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Zabok.
Prevalence
About 80 people with faimily name Petriček live in Croatia today, in 40 households. There were 100 of them in the middle of the past century, and their number decreased by 20 percent. They are located in 6 Croatian counties, threee cities and 13 other places, mostly in Zagreb (25), Sveti Ivan Zelina (<10), Zabok (<10), Salovec (<10), and in Gornje Oresje (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.