In Croatia, Šviglin families are almost entirely Croats (from Cazma area ), barely Slovenes (from Zagreb ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Klanjec area.
Prevalence
About 40 people with faimily name Šviglin live in Croatia today, in 20 households. There were 60 of them in the middle of the past century, and their number decreased by 30 percent. They are located in four Croatian counties and 5 other places, mostly in Zagreb (20), Zvonik in Cazma area (<10), Sesvete (<10), Ivanic-Grad (<10), and in Klostar Ivanic in Ivanic-Grad area (<5).
Outside Croatia
Family name Šviglin is present in two countries on two continents. The family name "Sviglin " 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.