Over the past 110 years, 85 girls and 10 176 boys have been named Merlin. The name Merlin ranks 9070th in the United States among the most common names for girls. For the first time more than ten times newborns were named Merlin in 1922. The peak of popularity of the name Merlin came in the 1920s and 2000s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.