Isabel is a moderately popular girls' name in United States, ranking #177 in 2025 with 1,746 recorded births. The name reached its all-time peak in 2006 with 4,009 births ranking #87. Since 1996, the popularity has increased by 18.8%. In 2025, approximately 1 in every 921 girls born was named Isabel. STABLE Recent data shows the name is currently stable.