Over the past 110 years, 13 029 girls have been named Kaelyn. The name Kaelyn ranks 1124th in the United States among the most common names for girls. For the first time more than ten times newborns were named Kaelyn in 1961. The peak of popularity of the name Kaelyn came in the 2000s and 2010s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.