Over the past 110 years, 103 908 boys and 264 457 girls have been named Leslie. The name Leslie ranks 279th in the United States among the most common names for boys. For the first time more than ten times newborns were named Leslie in 1910. The peak of popularity of the name Leslie came in the 1910s and 1920s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.