In 2025, 39 US girls were named Lilliann, making it the 3,811th most common girls’ name of the year, down 196 places from #3,615 in 2024. That is 4 fewer than the 43 girls named Lilliann in 2024. Its best rank for girls was #2,523, reached in 2009. That year also had the most girls given the name: 75. For comparison, it was #3,513 in 2015 and unranked in 1950.
Social Security card records list Lilliann in 33 years of the 146 from 1880 to 2025, starting in 1957 with 5 babies. In all, 1,258 US babies have been given the name, all of them girls. Its busiest decade was the 2010s, with 554 babies named Lilliann.
Over the 10 years from 2016 to 2025, 459 US girls were named Lilliann; the busiest of those years was 2016, with 62. In 2025 that was about 1 in 41,212 of the girls in SSA’s list for the year.
Related spellings in the SSA files include Lillian (476,457 babies since 1880), Lilian (20,470 babies since 1880), Lilyann (3,377 babies since 1880) and Lillyann (2,487 babies since 1880).