Family name 克西 (克西 
, Kexi 
, Kersey 
) , in the entire world, is quite a common last name. The surname 克西 is habitual in the United States, where it is quite a rare surname, New Zealand, and the United Kingdom. Measured by absolute frequency, the name is most common in the United States, the United Kingdom, and China. Very seldom, 克西 is the forename as well as the last name.