Allegra is a distinctive girls' name in England & Wales, ranking #708 in 2024 with 53 recorded births. The name reached its all-time peak in 2018 with 63 births ranking #641. Since 1996, the popularity has increased by 488.9%. In 2024, approximately 1 in every 4,868 girls born was named Allegra. STABLE Recent data shows the name is currently stable.