In 2025, 44 US boys were named Kellin, making it the 2,861st most common boys’ name of the year, up 122 places from #2,983 in 2024. That is 2 more than the 42 boys named Kellin in 2024. Its best rank for boys was #1,479, reached in 2014. That year also had the most boys given the name: 110. For comparison, it was #1,924 in 2015 and unranked in 1950.
Social Security card records list Kellin in 42 years of the 146 from 1880 to 2025, starting in 1982 with 7 babies. In all, 1,279 US babies have been given the name, 7.3% of them girls and 93% boys. Its busiest decade was the 2010s, with 620 babies named Kellin.
Over the 10 years from 2016 to 2025, 580 US boys were named Kellin; the busiest of those years was 2016, with 91. In 2025 that was about 1 in 38,820 of the boys in SSA’s list for the year.
Related spellings in the SSA files include Kellen (18,307 babies since 1880), Killian (16,834 babies since 1880), Kellan (11,269 babies since 1880) and Keelan (3,942 babies since 1880).