Ainslie is a distinctive girls' name in United States, ranking #5253 in 2002 with 22 recorded births. The name reached its all-time peak in 2009 with 40 births ranking #3871. Since 1996, the popularity has increased by 266.7%. In 2002, approximately 1 in every 81,674 girls born was named Ainslie. FALLING Recent data shows the name is currently falling.