In Croatia, Viščević families are Croats (from Cazma area ). In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and Bjelovar.
Prevalence
About 30 people with faimily name Viščević live in Croatia today, in 12 households. There were 50 of them in the middle of the past century, and their number decreased by 40 percent. They are only located in in 7 Croatian cities and 5 other places, mostly in Rijeka (<10), Bjelovar (<10), Gornji Draganec (<10), Zagreb (<5), and in Kastav (<5).
Outside Croatia
At least one family with this surname emigrated from Croatia to the United States. Family name Viščević is present in two countries on two continents. The family name "Viscevic " 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.