Alannah is a distinctive girls' name in United States, ranking #1145 in 2003 with 189 recorded births. The name reached its all-time peak in 2015 with 370 births ranking #762. Since 1996, the popularity has increased by 67.3%. In 2003, approximately 1 in every 9,667 girls born was named Alannah. FALLING Recent data shows the name is currently falling.