Kaja is a name of Polish origin, derived from the word 'kaja', which means 'beaver'. It is traditionally used as a female given name in Poland and other Slavic countries. The name Kaja is often associated with qualities such as strength, industriousness, and adaptability, traits that beavers are known for in nature. In some languages, like Hungarian, the name Kaja has been translated to 'Kajetán', which also means 'beaver'. Despite its Slavic roots, Kaja has gained popularity globally and can be found among people of diverse backgrounds.
"Kaja experienced varying popularity throughout the decades. Its peak occurred between 1986 and 1997 with consistent higher numbers, reaching a high of 25 births in 2009. However, since then, its popularity has stabilized around 13 to 18 births per year."