Katja is a distinctive girls' name in United States, ranking #12884 in 2022 with 7 recorded births. The name reached its all-time peak in 1998 with 48 births ranking #2785. Since 1996, the popularity has decreased by 58.8%. In 2022, approximately 1 in every 234,109 girls born was named Katja. FALLING Recent data shows the name is currently falling.