Isadore is a distinctive boys' name in United States, ranking #4998 in 2021 with 19 recorded births. The name reached its all-time peak in 2020 with 19 births ranking #4924. Since 1996, the popularity has increased by 111.1%. In 2021, approximately 1 in every 92,012 boys born was named Isadore. RISING Recent data shows the name is currently rising.