Isidoro is a distinctive boys' name in United States, ranking #8594 in 2005 with 8 recorded births. This places Isidoro in the bottom 36% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2000 with 20 births ranking #3979. Since 1996, the popularity has decreased by 38.5%. In 2005, approximately 1 in every 249,643 boys born was named Isidoro. RISING Recent data shows the name is currently rising.