Over the past 110 years, 159 566 boys and 21 girls have been named Leon. The name Leon ranks 204th in the United States among the most common names for boys. For the first time more than ten times newborns were named Leon in 1910. The peak of popularity of the name Leon 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.