Klemen families are Croats and they are mostly from Zlatar area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Djakovo.
Prevalence
About 170 people with faimily name Klemen live in Croatia today, in 70 households. There were 230 of them in the middle of the past century, and their number decreased by 20 percent. They are located in the most of Croatian counties, in 15 cities and 23 other places, mostly in Djakovo (55), Zagreb (40), Zajezda in Zlatar area (10), Rijeka (<10), and in Sveti Petar u Sumi in Pazin area (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over forty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.