In Croatia, Špelko families are Croats (from Samobor ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Samobor.
Prevalence
About 10 people with faimily name Špelko live in Croatia today, in one household only. There were 10 of them in the middle of the past century, and their number remains constant. They are located in only two Croatian places: in Klokocevec Samoborski (<10) and Strmec in Samobor area (<5).
Outside Croatia
Family name Špelko (including: Spelko , Shepelko and Shpelko ) is present in 8 countries on two continents. The family name "Spelko " is used by small number of people in the United States.