In 2025, 272 US boys were named Kylen, making it the 879th most common boys’ name of the year, up 46 places from #925 in 2024. That is 21 more than the 251 boys named Kylen in 2024. Its best rank for boys was #877, reached in 2023. The most boys given the name in a single year was 272, in 2025. For comparison, it was #988 in 2015 and unranked in 1950.
In 2025, 23 US girls were named Kylen, making it the 5,490th most common girls’ name of the year, up 802 places from #6,292 in 2024. That is 4 more than the 19 girls named Kylen in 2024. Its best rank for girls was #4,686, reached in 2016. That year also had the most girls given the name: 30. For comparison, it was #6,601 in 2015 and unranked in 1950.
Social Security card records list Kylen in 44 years of the 146 from 1880 to 2025, starting in 1981 with 8 babies. In all, 5,424 US babies have been given the name, 11% of them girls and 89% boys. Its busiest decade was the 2010s, with 2,125 babies named Kylen.
Over the 10 years from 2016 to 2025, 2,398 US boys were named Kylen; the busiest of those years was 2025, with 272. In 2025 that was about 1 in 6,280 of the boys in SSA’s list for the year.
Among the states, Kylen ranked highest in Louisiana in 2025, at #414 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Kellen (18,307 babies since 1880), Kylan (11,821 babies since 1880), Kylian (3,750 babies since 1880) and Kylin (3,449 babies since 1880).