Casimiro is a distinctive boys' name in United States, ranking #10008 in 2022 with 7 recorded births. This places Casimiro in the bottom 30% 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 12 births ranking #5627. Since 1996, the popularity has decreased by 30.0%. In 2022, approximately 1 in every 249,196 boys born was named Casimiro. FALLING Recent data shows the name is currently falling.