Ailsa is a distinctive girls' name in England & Wales, ranking #1391 in 2008 with 20 recorded births. The name reached its all-time peak in 1998 with 41 births ranking #619. Since 1996, the popularity has decreased by 41.2%. In 2008, approximately 1 in every 15,788 girls born was named Ailsa. STABLE Recent data shows the name is currently stable.