Ailsa is a distinctive girls' name in England & Wales, ranking #1196 in 2011 with 27 recorded births. The name reached its all-time peak in 1998 with 41 births ranking #619. Since 1996, the popularity has decreased by 20.6%. In 2011, approximately 1 in every 11,900 girls born was named Ailsa. STABLE Recent data shows the name is currently stable.