Komarec families are Croats and they are mostly from Samobor. In the past century, relatively most of Croatian residents bearing this family name were born in Samobor and Vinkovci.
Prevalence
About 70 people with faimily name Komarec live in Croatia today, in 30 households. There were 130 of them in the middle of the past century, and their number halved. They are located in 6 Croatian counties, in 8 cities and 9 other places, mostly in Rokovci in Vinkovci area (25), Samobor (<10), Zagreb (<10), Sveti Martin Pod Okicem (<10), and in Galgovo (<10).
Outside Croatia
Family name Komarec is present in five countries on two continents. The family name "Komarec " is used by small number of people in Poland and small number in the United States.
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.