In Croatia, Dekleva families are generally Croats (from Porec area ), very rarely Slovenes (from Middle Bosnia ). In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and Opatija.
Prevalence
About 60 people with faimily name Dekleva live in Croatia today, in 30 households. There were 70 of them in the middle of the past century, and their number decreased by 20 percent. They are located in threee Croatian counties, in 6 cities and four other places, mostly in Rijeka (25), Visnjan in Porec area (10), Matulji in Opatija area (<10), Zagreb (<10), and in Pula (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.