In Croatia, Teslić families are predominantly Croats (from Nin area ), rarely Serbs, and very rarely Hungarians (from the Island of Losinj ). In the past century, relatively most of Croatian residents bearing this family name were born in Gospic and Zagreb.
Prevalence
About 40 people with faimily name Teslić live in Croatia today, in 17 households. There were 70 of them in the middle of the past century, and their number decreased by 50 percent. They are located in 6 Croatian counties, in 6 cities and 6 other places, mostly in Zagreb (15), Vir in Nin area (<10), Cernik in Nova Gradiska area (<10), Nova Gradiska (<5), and in Sumetlica in Nova Gradiska area (<5).
Outside Croatia
Family name Teslić (including: Teslic , Teslich ) is present in 8 countries on three continents. "Teslich " is used by few people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.