Monterio is a distinctive boys' name in United States, ranking #4938 in 1999 with 14 recorded births. The name reached its all-time peak in 1996 with 17 births ranking #3966. Since 1996, the popularity has decreased by 17.6%. In 1999, approximately 1 in every 137,149 boys born was named Monterio. STABLE Recent data shows the name is currently stable.