In 2025, 5 US boys were named Quillan, making it the 13,419th most common boys’ name of the year, down 2,752 places from #10,667 in 2024. That is 2 fewer than the 7 boys named Quillan in 2024. Its best rank for boys was #4,175, reached in 1991. The most boys given the name in a single year was 19, in 2019. For comparison, it was #7,904 in 2015 and unranked in 1950.
Social Security card records list Quillan in 39 years of the 146 from 1880 to 2025, starting in 1982 with 6 babies. In all, 378 US babies have been given the name, all of them boys. Its busiest decade was the 2010s, with 122 babies named Quillan.
Over the 10 years from 2016 to 2025, 117 US boys were named Quillan; the busiest of those years was 2019, with 19. In 2025 that was about 1 in 341,615 of the boys in SSA’s list for the year.