Isidore is a distinctive boys' name in United States, ranking #4867 in 2019 with 20 recorded births. The name reached its all-time peak in 2023 with 34 births ranking #3443. Since 1996, the popularity has increased by 300.0%. In 2019, approximately 1 in every 89,668 boys born was named Isidore. STABLE Recent data shows the name is currently stable.