In 2025, 44 US girls were named Lillyann, making it the 3,497th most common girls’ name of the year, down 293 places from #3,204 in 2024. That is 6 fewer than the 50 girls named Lillyann in 2024. Its best rank for girls was #1,297, reached in 2011. That year also had the most girls given the name: 182. For comparison, it was #1,596 in 2015 and unranked in 1950.
Social Security card records list Lillyann in 32 years of the 146 from 1880 to 2025, starting in 1988 with 5 babies. In all, 2,487 US babies have been given the name, all of them girls. Its busiest decade was the 2010s, with 1,376 babies named Lillyann.
Over the 10 years from 2016 to 2025, 780 US girls were named Lillyann; the busiest of those years was 2016, with 150. In 2025 that was about 1 in 36,529 of the girls in SSA’s list for the year.
Related spellings in the SSA files include Lillian (476,457 babies since 1880), Lilyan (4,339 babies since 1880), Lilyann (3,377 babies since 1880) and Lillyan (2,426 babies since 1880).