Allanah is a distinctive girls' name in England & Wales, ranking #1993 in 2010 with 13 recorded births. The name reached its all-time peak in 1998 with 20 births ranking #1036. Since 1996, the popularity has decreased by 23.5%. In 2010, approximately 1 in every 24,695 girls born was named Allanah. STABLE Recent data shows the name is currently stable.