In 2025, 41 US girls were named Tammy, making it the 3,703rd most common girls’ name of the year, up 1,178 places from #4,881 in 2024. That is 13 more than the 28 girls named Tammy in 2024. Its best rank for girls was #8, reached in 1971. The most girls given the name in a single year was 21,199, in 1963. For comparison, it was #3,588 in 2015 and #936 in 1950.
Social Security card records list Tammy in 91 years of the 146 from 1880 to 2025, starting in 1934 with 5 babies. In all, 333,407 US babies have been given the name, 99.5% of them girls and 0.4% boys. Its busiest decade was the 1960s, with 182,845 babies named Tammy.
Over the 10 years from 2016 to 2025, 403 US girls were named Tammy; the busiest of those years was 2016, with 65. In 2025 that was about 1 in 39,202 of the girls in SSA’s list for the year.
Related spellings in the SSA files include Tamara (131,703 babies since 1880), Tami (38,017 babies since 1880), Tammie (35,514 babies since 1880) and Tammi (13,884 babies since 1880). Rarer spellings such as Tamy, Tamea and Tameya are summarised on this page. The open nickname list we use links it to Tami and Tammie.