Santo families are mainly Croats and they are mostly from Krizevci area , less frequently Hungarians (from Osijek ). In the past century, relatively most of Croatian residents bearing this family name were born in Daruvar area and in Osijek.
Prevalence
About 160 people with faimily name Santo live in Croatia today, in 70 households. There were 170 of them in the middle of the past century, and their number decreased by 10 percent. They are located in the most of Croatian counties, in 18 cities and 17 other places, mostly in Daruvar (25), Guscerovec in Krizevci area (15), Zagreb (10), Osijek (10), and in Novska (10).
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.