Isidore is a distinctive boys' name in United States, ranking #3443 in 2023 with 34 recorded births. This places Isidore in the top 24% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2023 with 34 births ranking #3443. Since 1996, the popularity has increased by 580.0%. In 2023, approximately 1 in every 50,252 boys born was named Isidore. STABLE Recent data shows the name is currently stable.