In 2025, 253 US boys were named Dillon, making it the 930th most common boys’ name of the year, down 67 places from #863 in 2024. That is 27 fewer than the 280 boys named Dillon in 2024. Its best rank for boys was #73, reached in 1992. That year also had the most boys given the name: 5,062. For comparison, it was #448 in 2015 and #3,104 in 1950.
In 2025, 41 US girls were named Dillon, making it the 3,658th most common girls’ name of the year, down 415 places from #3,243 in 2024. That is 8 fewer than the 49 girls named Dillon in 2024. Its best rank for girls was #2,726, reached in 2020. That year also had the most girls given the name: 61. For comparison, it was #4,891 in 2015 and unranked in 1950.
Social Security card records list Dillon in 116 years of the 146 from 1880 to 2025, starting in 1892 with 6 babies. In all, 66,270 US babies have been given the name, 1.6% of them girls and 98% boys. Its busiest decade was the 1990s, with 32,839 babies named Dillon.
Over the 10 years from 2016 to 2025, 4,121 US boys were named Dillon; the busiest of those years was 2016, with 670. In 2025 that was about 1 in 6,751 of the boys in SSA’s list for the year.
Among the states, Dillon ranked highest in West Virginia in 2025, at #342 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Dillan (7,387 babies since 1880), Dilan (6,138 babies since 1880), Dylon (4,517 babies since 1880) and Dyllan (3,802 babies since 1880). Rarer spellings such as Deleon, Dillen and Dillyn are summarised on this page.