In Croatia, Soplanda families are generally Croats (from Cazma area ), very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Bjelovar area.
Prevalence
About 20 people with faimily name Soplanda live in Croatia today, in five households only. There were 30 of them in the middle of the past century, and their number decreased by 50 percent. They are located in only four naselja i to in Zagreb (10), Grabovnica (<5), Dugo Selo (<5), and in Donja Petricka in Bjelovar area (<5).
Outside Croatia
Family name Soplanda is present in two countries on two continents. The family name "Soplanda " is used by small number of 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 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.