Over the past 110 years, 47 351 boys and 12 girls have been named Marcos. The name Marcos ranks 456th in the United States among the most common names for boys. For the first time more than ten times newborns were named Marcos in 1911. The peak of popularity of the name Marcos came in the 1990s and 2000s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.