Over the past 110 years, 10 176 boys and 85 girls have been named Merlin. The name Merlin ranks 961th in the United States among the most common names for boys. For the first time more than ten times newborns were named Merlin in 1912. The peak of popularity of the name Merlin came in the 1920s and 1930s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.