Šinko families are Croats and they are mostly from Varazdin area. In the past century, relatively most of Croatian residents bearing this family name were born in Varazdin and Zagreb.
About 500 people with faimily name Šinko live in Croatia today, in 210 households. There were 470 of them in the middle of the past century, and their number increased by 10 percent. They are located in the most of Croatian counties, in 35 cities and 65 other places, mostly in Zagreb (60), in Beretinec (45) and Sveti Ilija (30) in Varazdin area, Varazdin (25), and in Ivanovac in Osijek area (25).