Kleva families are often Croats and they are mostly from Rijeka , less frequently Italians (from Pula ). In the past century, relatively most of Croatian residents bearing this family name were born in Pula and Rijeka.
Prevalence
About 70 people with faimily name Kleva live in Croatia today, in 30 households. There were 90 of them in the middle of the past century, and their number decreased by 20 percent. They are located in 6 Croatian counties, in 10 cities and 6 other places, mostly in Barban in Labin area (20), Pula (15), Rijeka (15), Olib (<10), and in Doricici in Bakr area (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.