In Croatia, Košuljandić families are Croats (from Crikvenica ). In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and Crikvenica.
Prevalence
About 40 people with faimily name Košuljandić live in Croatia today, in 20 households. There were 30 of them in the middle of the past century, and their number increased by 30 percent. They are located in threee Croatian counties, in 6 cities and four other places, mostly in Crikvenica (15), Rijeka (10), Dramalj (<10), Sibenik (<5), and in Novi Vinodolski (<5).
Outside Croatia
Family name Košuljandić is present in three countries on two continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1936 in source Emigration Commission Zagreb.