Meaning and history
Kaja is used across Scandinavia, Central Europe, and the Balkans, often as a form of Katherine, Karoline, or Katarina, though its exact derivation varies by language. It is also an Estonian word meaning “echo.” Slovenian singer Kaja Draksler and Norwegian handball player Kaja Kamp are notable bearers.
20062006: 24 births, rank #5,545
2007: 14 births, rank #8,520
2008: 12 births, rank #9,476
2009: 25 births, rank #5,537
2010: 22 births, rank #5,977
20112011: 18 births, rank #6,855
2012: 25 births, rank #5,398
2013: 13 births, rank #8,580
2014: 16 births, rank #7,302
2015: 18 births, rank #6,721
20162016: 18 births, rank #6,663
2017: 19 births, rank #6,287
2018: 13 births, rank #8,146
2019: 13 births, rank #8,138
2020: 12 births, rank #8,406
20212021: 14 births, rank #7,630
2022: 13 births, rank #8,032
2023: 18 births, rank #6,409
2024: 19 births, rank #6,167
20252025: 16 births, rank #6,838
In 2025, 16 babies were recorded with the name Kaja, ranking #6,838 among girls.