In Croatia, Ključka families are Croats (from Kutina ). In the past century, relatively most of Croatian residents bearing this family name were born in Garesnica and Lipik.
Prevalence
About 10 people with faimily name Ključka live in Croatia today, in three households only. There were 10 of them in the middle of the past century, and their number remains constant. They are located in two Croatian cities only, in Kutina (<10) and Stara Novalja on the Island of Pag (<5).
Outside Croatia
Family name Ključka (including: Klyuchka , Kljucka and Kliuchka ) is present in 10 countries on three continents.