Katja is a distinctive girls' name in United States, ranking #11691 in 2023 with 8 recorded births. The name reached its all-time peak in 1998 with 48 births ranking #2785. Since 1996, the popularity has decreased by 52.9%. In 2023, approximately 1 in every 200,331 girls born was named Katja. FALLING Recent data shows the name is currently falling.