Aja is a distinctive girls' name in United States, ranking #1368 in 2005 with 158 recorded births. The name reached its all-time peak in 1996 with 246 births ranking #822. Since 1996, the popularity has decreased by 35.8%. In 2005, approximately 1 in every 11,694 girls born was named Aja. FALLING Recent data shows the name is currently falling.