Ainslie is a distinctive girls' name in United States, ranking #4488 in 2012 with 32 recorded births. The name reached its all-time peak in 2009 with 40 births ranking #3871. Since 1996, the popularity has increased by 433.3%. In 2012, approximately 1 in every 55,023 girls born was named Ainslie. FALLING Recent data shows the name is currently falling.