Ainslie is a distinctive girls' name in United States, ranking #5995 in 2014 with 21 recorded births. The name reached its all-time peak in 2009 with 40 births ranking #3871. Since 1996, the popularity has increased by 250.0%. In 2014, approximately 1 in every 85,045 girls born was named Ainslie. FALLING Recent data shows the name is currently falling.