In 2025, 202 US boys were named Kellen, making it the 1,069th most common boys’ name of the year, down 35 places from #1,034 in 2024. That is 14 fewer than the 216 boys named Kellen in 2024. Its best rank for boys was #337, reached in 2012. That year also had the most boys given the name: 932. For comparison, it was #507 in 2015 and unranked in 1950.
Social Security card records list Kellen in 65 years of the 146 from 1880 to 2025, starting in 1954 with 5 babies. In all, 18,307 US babies have been given the name, 6.9% of them girls and 93% boys. Its busiest decade was the 2010s, with 6,343 babies named Kellen.
Over the 10 years from 2016 to 2025, 3,045 US boys were named Kellen; the busiest of those years was 2016, with 440. In 2025 that was about 1 in 8,456 of the boys in SSA’s list for the year.
Among the states, Kellen ranked highest in Massachusetts in 2025, at #536 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Kellan (11,269 babies since 1880), Keller (4,172 babies since 1880), Kylen (5,424 babies since 1880) and Keelan (3,942 babies since 1880). Rarer spellings such as Keylan, Kyleen and Kelin are summarised on this page.