Aia is a distinctive girls' name in England & Wales, ranking #4564 in 2009 with 4 recorded births. This places Aia in the bottom 37% of ranked UK girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2009 with 4 births ranking #4564. In 2009, approximately 1 in every 78,344 girls born was named Aia. FALLING Recent data shows the name is currently falling.