Alannah is a distinctive girls' name in United States, ranking #942 in 2008 with 288 recorded births. The name reached its all-time peak in 2015 with 370 births ranking #762. Since 1996, the popularity has increased by 154.9%. In 2008, approximately 1 in every 6,565 girls born was named Alannah. FALLING Recent data shows the name is currently falling.