Otočan families are Croats and they are mostly from Labin area. In the past century, relatively most of Croatian residents bearing this family name were born in Pula and in Labin area. In Raponji in Labin area every fifth inhabitant had the family name Otočan.
Prevalence
About 100 people with faimily name Otočan live in Croatia today, in 30 households. There were 130 of them in the middle of the past century, and their number decreased by 30 percent. They are located in four Croatian counties, in 8 cities and 8 other places, mostly in Pula (15), Tomisici in Pazin area (15), Raponji in Labin area (15), and in Sivati (15) and Zminj (<10) in Pazin area.
Outside Croatia
At least four families with this surname emigrated from Croatia to Sweden (3) and the United States (1). Family name Otočan (including: Otocan , Ottochian ) is present in 9 countries on three continents. "Ottochian " is used by small number of people in the United States and small number in Italy.
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.