Aja is a distinctive girls' name in United States, ranking #2235 in 2015 with 84 recorded births. The name reached its all-time peak in 1996 with 246 births ranking #822. Since 1996, the popularity has decreased by 65.9%. In 2015, approximately 1 in every 21,246 girls born was named Aja. FALLING Recent data shows the name is currently falling.