In Croatia, Vrućina families are Croats (from Garesnica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Bjelovar.
Prevalence
About 40 people with faimily name Vrućina live in Croatia today, in 20 households. There were 30 of them in the middle of the past century, and their number increased by 40 percent. They are located in 8 Croatian counties, in 10 cities and 9 other places, mostly in Zagreb (10), Kutina (<10), Ludbreg (<10), Osijek (<5), and in Krizic in Bjelovar area (<5).
Outside Croatia
Family name Vrućina (including: Vrucina , Vruchina ) is present in 7 countries on two continents.
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.