Ainslie is a distinctive girls' name in United States, ranking #5237 in 2006 with 26 recorded births. The name reached its all-time peak in 2009 with 40 births ranking #3871. Since 1996, the popularity has increased by 333.3%. In 2006, approximately 1 in every 73,118 girls born was named Ainslie. FALLING Recent data shows the name is currently falling.