In 2025, 579 US boys were named Callen, making it the 516th most common boys’ name of the year, down 36 places from #480 in 2024. That is 64 fewer than the 643 boys named Callen in 2024. Its best rank for boys was #450, reached in 2023. That year also had the most boys given the name: 687. For comparison, it was #520 in 2015 and unranked in 1950.
Social Security card records list Callen in 57 years of the 146 from 1880 to 2025, starting in 1954 with 11 babies. In all, 10,105 US babies have been given the name, 6.0% of them girls and 94% boys. Its busiest decade was the 2010s, with 4,924 babies named Callen.
Over the 10 years from 2016 to 2025, 5,779 US boys were named Callen; the busiest of those years was 2023, with 687. In 2025 that was about 1 in 2,950 of the boys in SSA’s list for the year.
Among the states, Callen ranked highest in Wisconsin in 2025, at #211 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Callan (12,634 babies since 1880), Kaylen (8,504 babies since 1880), Kalen (6,096 babies since 1880) and Cailyn (5,554 babies since 1880). Rarer spellings such as Kaleen, Caileen and Cayleen are summarised on this page.