Alannah is a distinctive girls' name in United States, ranking #1370 in 2002 with 141 recorded births. The name reached its all-time peak in 2015 with 370 births ranking #762. Since 1996, the popularity has increased by 24.8%. In 2002, approximately 1 in every 12,743 girls born was named Alannah. FALLING Recent data shows the name is currently falling.