Ailsa is a distinctive girls' name in England & Wales, ranking #1405 in 2015 with 23 recorded births. The name reached its all-time peak in 1998 with 41 births ranking #619. Since 1996, the popularity has decreased by 32.4%. In 2015, approximately 1 in every 13,388 girls born was named Ailsa. STABLE Recent data shows the name is currently stable.