In 2025, 33 US girls were named Daysi, making it the 4,284th most common girls’ name of the year, up 1,557 places from #5,841 in 2024. That is 12 more than the 21 girls named Daysi in 2024. Its best rank for girls was #2,160, reached in 1996. That year also had the most girls given the name: 63. For comparison, it was #5,163 in 2015 and unranked in 1950.
Social Security card records list Daysi in 48 years of the 146 from 1880 to 2025, starting in 1970 with 5 babies. In all, 1,535 US babies have been given the name, all of them girls. Its busiest decade was the 2000s, with 488 babies named Daysi.
Over the 10 years from 2016 to 2025, 249 US girls were named Daysi; the busiest of those years was 2025, with 33. In 2025 that was about 1 in 48,705 of the girls in SSA’s list for the year.
Related spellings in the SSA files include Daisy (159,355 babies since 1880) and Dasia (5,392 babies since 1880). Rarer spellings such as Dayzie and Dayzi are summarised on this page.