Isidore is a distinctive boys' name in United States, ranking #9037 in 2003 with 7 recorded births. The name reached its all-time peak in 2023 with 34 births ranking #3443. Since 1996, the popularity has increased by 40.0%. In 2003, approximately 1 in every 282,181 boys born was named Isidore. STABLE Recent data shows the name is currently stable.