Family name Коске (Koske 
, Коске 
) , worldwide, is quite a rare surname. The surname Коске is habitual in Kenya, where it is quite a rare surname, Germany, where it is a rare surname, and Belgium, where it is a very rare surname. Measured by absolute frequency, it most frequently occurs in Kenya, Germany, and the United States. Much less frequently, Коске is the forename as well as the last name.