Isidore is a distinctive boys' name in United States, ranking #6390 in 2013 with 13 recorded births. The name reached its all-time peak in 2023 with 34 births ranking #3443. Since 1996, the popularity has increased by 160.0%. In 2013, approximately 1 in every 145,481 boys born was named Isidore. STABLE Recent data shows the name is currently stable.