Isidore is a distinctive boys' name in United States, ranking #7202 in 2020 with 11 recorded births. The name reached its all-time peak in 2023 with 34 births ranking #3443. Since 1996, the popularity has increased by 120.0%. In 2020, approximately 1 in every 156,824 boys born was named Isidore. STABLE Recent data shows the name is currently stable.