Isidore is a distinctive boys' name in United States, ranking #5712 in 2022 with 16 recorded births. The name reached its all-time peak in 2023 with 34 births ranking #3443. Since 1996, the popularity has increased by 220.0%. In 2022, approximately 1 in every 109,023 boys born was named Isidore. STABLE Recent data shows the name is currently stable.