Isabel is a moderately popular girls' name in United States, ranking #146 in 2021 with 1,916 recorded births. The name reached its all-time peak in 2006 with 4,009 births ranking #87. Since 1996, the popularity has increased by 30.3%. In 2021, approximately 1 in every 856 girls born was named Isabel. STABLE Recent data shows the name is currently stable.