Marcos is a moderately popular boys' name in United States, ranking #490 in 2021 with 601 recorded births. The name reached its all-time peak in 2001 with 1,415 births ranking #240. Since 1996, the popularity has decreased by 55.5%. In 2021, approximately 1 in every 2,909 boys born was named Marcos. STABLE Recent data shows the name is currently stable.