In 2025, 2,564 US girls were named Allison, making it the 103rd most common girls’ name of the year, down 4 places from #99 in 2024. That is 67 fewer than the 2,631 girls named Allison in 2024. Its best rank for girls was #30, reached in 2009. The most girls given the name in a single year was 8,150, in 1994. For comparison, it was #39 in 2015 and #681 in 1950.
Social Security card records list Allison in 144 years of the 146 from 1880 to 2025, starting in 1880 with 6 babies. In all, 322,944 US babies have been given the name, 99% of them girls and 1.2% boys. Its busiest decade was the 1990s, with 74,580 babies named Allison.
Over the 10 years from 2016 to 2025, 32,817 US girls were named Allison; the busiest of those years was 2016, with 4,786. In 2025 that was about 1 in 627 of the girls in SSA’s list for the year.
Among the states, Allison ranked highest in Texas in 2025, at #50 for girls there. It was in the top 100 in 10 states (counting DC). Related spellings in the SSA files include Alison (117,481 babies since 1880), Allyson (53,779 babies since 1880), Alyson (29,740 babies since 1880) and Allisson (2,842 babies since 1880). Rarer spellings such as Allisyn, Alisyn and Allysen are summarised on this page. The open nickname list we use links it to Ali, Allie and Ally.