In Croatia, Thiel families are Croats (from Varazdin ).
Prevalence
About 10 people with faimily name Thiel live in Croatia today, in 7 households. There were 0 of them in the middle of the past century, and their number multiplied. They are located in threee Croatian counties, two cities and another small place , mostly in Zagreb (<5), Varazdin (<5), and in Gorjani in Djakovo area (<5).
Outside Croatia
Family name Thiel (including: Thiell , Thielly ) is present in 79 countries worldwide. The family name "Thiel " is used by some 40000 people in Germany , about 20000 in the United States , and some 2000 people in Brazil. "Thiell " is used by some 100 people in the United States , small number in Canada , and small number of people in France.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.