Katja is a distinctive girls' name in United States, ranking #6384 in 2018 with 19 recorded births. The name reached its all-time peak in 1998 with 48 births ranking #2785. Since 1996, the popularity has increased by 11.8%. In 2018, approximately 1 in every 89,496 girls born was named Katja. FALLING Recent data shows the name is currently falling.