Kristoffer Kruken - Ola Stemshaug: Norsk personnamnleksikon, Det Norske Samlaget, Oslo 1995, ISBN 82-521-4483-7
Statistisk sentralbyrå, Namnestatistikk: 11 076 males with the given name Kåre living in Norway on January 1st 2011, with the frequency peak in the 1920s. Accessed on April 29th, 2011.
Etymology
From Old NorseKári, originally a byname from kárr(“curly-haired”). (Possibly akin to English Cory.)