Isidore is a distinctive boys' name in United States, ranking #8466 in 2007 with 9 recorded births. The name reached its all-time peak in 2023 with 34 births ranking #3443. Since 1996, the popularity has increased by 80.0%. In 2007, approximately 1 in every 230,582 boys born was named Isidore. STABLE Recent data shows the name is currently stable.