Runtić families are Croats and they are mostly from Sinj area. In the past century, relatively most of Croatian residents bearing this family name were born in Split and in Sinj area.
Prevalence
About 130 people with faimily name Runtić live in Croatia today, in 50 households. There were 90 of them in the middle of the past century, and their number increased by 40 percent. They are located in 10 Croatian counties, in 14 cities and 8 other places, mostly in Split (50), Zagreb (20), Osijek (15), Ivankovo in Vinkovci area (10), and in Sesvete (<10).
Outside Croatia
Family name Runtić (including: Runtic , Runtich ) is present in 6 countries on two continents. "Runtich " is used by few people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.