Aja is a distinctive girls' name in United States, ranking #3461 in 2025 with 44 recorded births. The name reached its all-time peak in 1996 with 246 births ranking #822. Since 1996, the popularity has decreased by 82.1%. In 2025, approximately 1 in every 36,529 girls born was named Aja. FALLING Recent data shows the name is currently falling.