In Croatia, Kolb families are generally Croats (from Vinkovci area ), very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Vinkovci area and in Karlovac.
Prevalence
About 10 people with faimily name Kolb live in Croatia today, in 9 households. There were 30 of them in the middle of the past century, and their number decreased significantly. They are located in four Croatian counties, four cities and two other places, mostly in Osijek (<5), Zagreb (<5), Visnjevac (<5), Erdut in Vinkovci area (<5), and in Velika Gorica (<5).
Outside Croatia
Family name Kolb is present in 72 countries worldwide. The family name "Kolb " is used by some 30000 people in Germany , about 20000 in the United States , and some 2000 people in France. "Colb " is used by some 100 people in the United States , small number in Israel , and small number of people in Colombia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.