In Croatia, Dečman families are Croats (from Pregrada area ). In the past century, relatively most of Croatian residents bearing this family name were born in Pregrada area and in Kutina area. In Hum Košnički in Pregrada area every sixth inhabitant had the family name Dečman.
Prevalence
About 50 people with faimily name Dečman live in Croatia today, in 20 households. There were 90 of them in the middle of the past century, and their number decreased by 40 percent. They are located in 7 Croatian counties, in 7 cities and 10 other places, mostly in Zagreb (<10), Karlovac (<10), Sirinec in Ivanic-Grad area (<10), Velika Horvatska in Pregrada area (<10), and in Split (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.