Tumpa families are Croats and they are mostly from Zabok area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Krapina. In Dukovec in Zabok area every eighth inhabitant had the family name Tumpa.
Prevalence
About 170 people with faimily name Tumpa live in Croatia today, in 80 households. There were 240 of them in the middle of the past century, and their number decreased by 30 percent. They are located in the most of Croatian counties, in 16 cities and 24 other places, mostly in Zagreb (35), Lepajci (20), Svaljkovec in Zabok area (15), Karlovac (10), and in Dugo Selo (<10).
Outside Croatia
Family name Tumpa is present in 13 countries worldwide. The family name "Tumpa " is used by some 10000 people in Bangladesh , about 80 in Indonesia , and 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 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.