Allanah is a distinctive girls' name in England & Wales, ranking #2275 in 2011 with 11 recorded births. The name reached its all-time peak in 1998 with 20 births ranking #1036. Since 1996, the popularity has decreased by 35.3%. In 2011, approximately 1 in every 29,210 girls born was named Allanah. STABLE Recent data shows the name is currently stable.