Allegra is a distinctive girls' name in United States, ranking #3748 in 2024 with 40 recorded births. The name reached its all-time peak in 1997 with 152 births ranking #1193. Since 1996, the popularity has decreased by 69.0%. In 2024, approximately 1 in every 40,330 girls born was named Allegra. FALLING Recent data shows the name is currently falling.