Allegra is a distinctive girls' name in United States, ranking #3045 in 2023 with 54 recorded births. The name reached its all-time peak in 1997 with 152 births ranking #1193. Since 1996, the popularity has decreased by 58.1%. In 2023, approximately 1 in every 29,679 girls born was named Allegra. FALLING Recent data shows the name is currently falling.