Over the past 110 years, 105 girls and 13 538 boys have been named Kellen. The name Kellen ranks 8457th in the United States among the most common names for girls. For the first time more than ten times newborns were named Kellen in 1981. The peak of popularity of the name Kellen came in the 1980s and 2010s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.