In Croatia, Thompson families are Croats (from Zagreb ).
Prevalence
Only a few people with faimily name Thompson live in Croatia today, in two households only. They are located in two Croatian counties, two cities and another small place , mostly in Zagreb (<5), Makarska (<5), and in Milna on the Island of Brac (<5).
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.