Katja is a distinctive girls' name in United States, ranking #4175 in 1997 with 26 recorded births. The name reached its all-time peak in 1998 with 48 births ranking #2785. Since 1996, the popularity has increased by 52.9%. In 1997, approximately 1 in every 66,948 girls born was named Katja. FALLING Recent data shows the name is currently falling.