Over the past 110 years, 66 girls and 279 254 boys have been named Leonard. The name Leonard ranks 9714th in the United States among the most common names for girls. For the first time more than ten times newborns were named Leonard in 1925. The peak of popularity of the name Leonard came in the 1920s and 1960s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.