Over the past 110 years, 264 457 girls and 103 908 boys have been named Leslie. The name Leslie ranks 135th in the United States among the most common names for girls. 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 1960s and 1970s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.