In 2025, 3,966 US girls were named Lillian, making it the 57th most common girls’ name of the year, down 3 places from #54 in 2024. That is 73 more than the 3,893 girls named Lillian in 2024. Its best rank for girls was #10, reached in 1901. The most girls given the name in a single year was 10,049, in 1920. For comparison, it was #26 in 2015 and #156 in 1950.
Social Security card records list Lillian in every one of the 146 years from 1880 to 2025; in 1880 there were 672 babies with the name. In all, 476,457 US babies have been given the name, 99.7% of them girls and 0.3% boys. Its busiest decade was the 1920s, with 83,492 babies named Lillian.
Over the 10 years from 2016 to 2025, 48,163 US girls were named Lillian; the busiest of those years was 2016, with 6,386. In 2025 that was about 1 in 405 of the girls in SSA’s list for the year.
Among the states, Lillian ranked highest in Maine in 2025, at #15 for girls there. It was in the top 100 in 46 states (counting DC). Related spellings in the SSA files include Liliana (75,146 babies since 1880), Lilian (20,470 babies since 1880), Lilyan (4,339 babies since 1880) and Lillyann (2,487 babies since 1880). Rarer spellings such as Lilianne, Liliane and Lyllian are summarised on this page. The open nickname list we use links it to Lil, Lilly and Lolly.