In 2025, 177 US girls were named Tillie, making it the 1,269th most common girls’ name of the year, down 34 places from #1,235 in 2024. That is 14 fewer than the 191 girls named Tillie in 2024. Its best rank for girls was #148, reached in 1884. The most girls given the name in a single year was 499, in 1915. For comparison, it was #2,585 in 2015 and #1,675 in 1950.
Social Security card records list Tillie in 145 years of the 146 from 1880 to 2025, starting in 1880 with 83 babies. In all, 15,765 US babies have been given the name, 99.8% of them girls and 0.2% boys. Its busiest decade was the 1910s, with 3,666 babies named Tillie.
Over the 10 years from 2016 to 2025, 1,268 US girls were named Tillie; the busiest of those years was 2024, with 191. In 2025 that was about 1 in 9,081 of the girls in SSA’s list for the year.
Among the states, Tillie ranked highest in Iowa in 2025, at #487 for girls there. It was not in the top 100 of any state. Related spellings in the SSA files include Tilly (2,699 babies since 1880). Rarer spellings such as Tylie, Tilley and Tilia are summarised on this page.