In 2025, 621 US girls were named Ainsley, making it the 483rd most common girls’ name of the year, up 221 places from #704 in 2024. That is 222 more than the 399 girls named Ainsley in 2024. Its best rank for girls was #332, reached in 2013. The most girls given the name in a single year was 1,001, in 2014. For comparison, it was #338 in 2015 and unranked in 1950.
Social Security card records list Ainsley in 62 years of the 146 from 1880 to 2025, starting in 1950 with 5 babies. In all, 20,896 US babies have been given the name, 98% of them girls and 2.0% boys. Its busiest decade was the 2010s, with 9,066 babies named Ainsley.
Over the 10 years from 2016 to 2025, 7,157 US girls were named Ainsley; the busiest of those years was 2016, with 970. In 2025 that was about 1 in 2,588 of the girls in SSA’s list for the year.
Among the states, Ainsley ranked highest in Maine in 2025, at #154 for girls there. It was not in the top 100 of any state. Related spellings in the SSA files include Ansley (12,168 babies since 1880), Ainslee (1,583 babies since 1880), Anslee (1,402 babies since 1880) and Annsley (917 babies since 1880). Rarer spellings such as Ainslie, Annslee and Aynsley are summarised on this page.