Karlo families are Croats and they are mostly from Klanjec area. In the past century, relatively most of Croatian residents bearing this family name were born in Drnis and Zagreb.
Prevalence
About 100 people with faimily name Karlo live in Croatia today, in 40 households. There were 80 of them in the middle of the past century, and their number increased by 20 percent. They are located in the most of Croatian counties, in 13 cities and 8 other places, mostly in Zagreb (50), Split (20), Vodice (<10), Karalic (<10), and in Pristava in Klanjec area (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.