In Croatia, Tuma families are Croats (from Bjelovar ). In the past century, relatively most of Croatian residents bearing this family name were born in Bjelovar and Osijek.
Prevalence
About 20 people with faimily name Tuma live in Croatia today, in 9 households. There were 30 of them in the middle of the past century, and their number decreased by 50 percent. They are located in only five naselja i to in Bjelovar (15), Osijek (<5), Varazdin (<5), Starigrad on the Island of Pasman (<5), and in Stari Skucani in Bjelovar area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1927 in source Emigration Commission Zagreb.