In 2025, 31 US girls were named Rilyn, making it the 4,529th most common girls’ name of the year, down 254 places from #4,275 in 2024. That is 3 fewer than the 34 girls named Rilyn in 2024. Its best rank for girls was #1,970, reached in 2012. That year also had the most girls given the name: 100. For comparison, it was #2,401 in 2015 and unranked in 1950.
In 2025, 6 US boys were named Rilyn, making it the 11,724th most common boys’ name of the year. Its best rank for boys was #4,821, reached in 2012. That year also had the most boys given the name: 20. For comparison, it was #5,935 in 2015 and unranked in 1950.
Social Security card records list Rilyn in 27 years of the 146 from 1880 to 2025, starting in 1999 with 5 babies. In all, 1,434 US babies have been given the name, 89% of them girls and 11% boys. Its busiest decade was the 2010s, with 827 babies named Rilyn.
Over the 10 years from 2016 to 2025, 513 US girls were named Rilyn; the busiest of those years was 2016, with 83. In 2025 that was about 1 in 51,847 of the girls in SSA’s list for the year.
Related spellings in the SSA files include Rylan (41,160 babies since 1880), Rylen (4,198 babies since 1880), Rilynn (3,730 babies since 1880) and Rylynn (3,243 babies since 1880). Rarer spellings such as Realyn are summarised on this page.