Kaja is a distinctive girls' name in England & Wales, ranking #735 in 2020 with 50 recorded births. This places Kaja in the top 10% of ranked UK girls' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 2018 with 61 births ranking #657. In 2020, approximately 1 in every 5,368 girls born was named Kaja. FALLING Recent data shows the name is currently falling.