Over the past 110 years, 72 855 girls and 6 boys have been named Kelli. The name Kelli ranks 420th in the United States among the most common names for girls. For the first time more than ten times newborns were named Kelli in 1952. The peak of popularity of the name Kelli came in the 1970s and 1980s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.