Veselko families are Croats and they are mostly from Mursko Sredisce area. In the past century, relatively most of Croatian residents bearing this family name were born in Cakovec and Zagreb.
Prevalence
About 60 people with faimily name Veselko live in Croatia today, in 30 households. There were 80 of them in the middle of the past century, and their number decreased by 20 percent. They are only located in in 6 Croatian cities and 16 other places, mostly in Zagreb (15), Prekopa in Mursko Sredisce area (<10), Petlovac in Beli Manastir area (<10), and in Pleskovec (<10) and Vugrisinec (<10) in Cakovec area.
Outside Croatia
Family name Veselko is present in 14 countries on three continents. The family name "Veselko " is used by some 200 people in Russian Federation , about 60 in Ukraine , 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 2007 in source Encyclopaedia of Croatian Surnames.