Isadore is a distinctive boys' name in United States, ranking #6491 in 2016 with 13 recorded births. The name reached its all-time peak in 2020 with 19 births ranking #4924. Since 1996, the popularity has increased by 44.4%. In 2016, approximately 1 in every 145,939 boys born was named Isadore. RISING Recent data shows the name is currently rising.