Surname Zilka (Zilka
) , in the entire world, is quite a rare family name. The surname Zilka is characteristic of Slovakia, where it is quite a common surname, Czechia, where it is quite a rare surname, and Israel. Not in comparison with a country's population, it is commonest in the United States, Slovakia, and Czechia. Very seldom, Zilka is the forename as well as the last name.