Isabelle is a moderately popular girls' name in United States, ranking #117 in 2021 with 2,392 recorded births. The name reached its all-time peak in 2007 with 4,105 births ranking #79. Since 1996, the popularity has increased by 229.5%. In 2021, approximately 1 in every 685 girls born was named Isabelle. FALLING Recent data shows the name is currently falling.