Petrinec families are Croats and they are mostly from Zlatar area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Varazdin.
Prevalence
About 330 people with faimily name Petrinec live in Croatia today, in 150 households. There were 440 of them in the middle of the past century, and their number decreased by 20 percent. They are located in the most of Croatian counties, in 23 cities and 40 other places, mostly in Zagreb (105), Varazdin (25), Petrova Gora in Zlatar area (20), Pristava in Klanjec area (20), and in Risvica in Pregrada area (15).
Outside Croatia
Family name Petrinec is present in 11 countries on four continents. The family name "Petrinec " is used by some 100 people in Slovakia , about 100 in the United States , and small number of people in Switzerland.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.