Isobel is a moderately popular girls' name in England & Wales, ranking #230 in 2024 with 208 recorded births. The name reached its all-time peak in 2005 with 1,098 births ranking #51. Since 1996, the popularity has decreased by 60.2%. In 2024, approximately 1 in every 1,240 girls born was named Isobel. FALLING Recent data shows the name is currently falling.