In Croatia, Kluka families are Croats (from Cakovec ). In the past century, relatively most of Croatian residents bearing this family name were born in Cakovec.
Prevalence
Only a few people with faimily name Kluka live in Croatia today, in one household only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in two Croatian cities only, in Cakovec (<10) and Rijeka (<5).
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.