Isadore is a distinctive boys' name in United States, ranking #9030 in 2006 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 2006, approximately 1 in every 256,890 boys born was named Isadore. RISING Recent data shows the name is currently rising.