Allegra is a distinctive girls' name in United States, ranking #3367 in 2022 with 47 recorded births. This places Allegra in the top 19% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1997 with 152 births ranking #1193. Since 1996, the popularity has decreased by 63.6%. In 2022, approximately 1 in every 34,867 girls born was named Allegra. FALLING Recent data shows the name is currently falling.