Geušić families are Croats and they are mostly from Samobor. In the past century, relatively most of Croatian residents bearing this family name were born in Samobor and in Slovenia.
Prevalence
About 100 people with faimily name Geušić live in Croatia today, in 40 households. They are only located in in 8 Croatian cities and four other places, mostly in Cerje (45), Samobor (25), Cerje Samoborsko (20), Zagreb (<10), and in Graberje Ivanicko (<5).
Outside Croatia
Family name Geušić is present in two countries on two continents. The family name "Geusic " is used by some 100 people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1923 in source Emigration Commission Zagreb.