Isadore is a distinctive boys' name in United States, ranking #7730 in 2000 with 8 recorded births. The name reached its all-time peak in 2020 with 19 births ranking #4924. Since 1996, the popularity has decreased by 11.1%. In 2000, approximately 1 in every 245,492 boys born was named Isadore. RISING Recent data shows the name is currently rising.