Over the past 110 years, 470 277 girls and 77 686 boys have been named Kelly. The name Kelly ranks 63th in the United States among the most common names for girls. For the first time more than ten times newborns were named Kelly in 1910. The peak of popularity of the name Kelly 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.