Isidore is a distinctive boys' name in United States, ranking #10476 in 2004 with 6 recorded births. The name reached its all-time peak in 2023 with 34 births ranking #3443. Since 1996, the popularity has increased by 20.0%. In 2004, approximately 1 in every 330,800 boys born was named Isidore. STABLE Recent data shows the name is currently stable.