In Croatia, Dečković families are Croats (from Koprivnica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Bjelovar area and in Koprivnica.
Prevalence
About 20 people with faimily name Dečković live in Croatia today, in 8 households. They are located in threee Croatian counties, threee cities and 5 other places, mostly in Peteranec in Koprivnica area (<10), Dautan in Bjelovar area (<5), Bjelovar (<5), Zagreb (<5), and in Koprivnica (<5).
Outside Croatia
Family name Dečković (including: Deckovic , Dechkovich ) is present in three countries.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 2007 in source Encyclopaedia of Croatian Surnames.