In 2025, 5,738 US girls were named Lainey, making it the 30th most common girls’ name of the year, up 8 places from #38 in 2024. That is 582 more than the 5,156 girls named Lainey in 2024. Its best rank for girls was #30, reached in this year, 2025. That year also had the most girls given the name: 5,738. For comparison, it was #576 in 2015 and unranked in 1950.
Social Security card records list Lainey in 49 years of the 146 from 1880 to 2025, starting in 1968 with 6 babies. In all, 28,431 US babies have been given the name, all of them girls. Its busiest decade was the 2020s, with 18,616 babies named Lainey.
Over the 10 years from 2016 to 2025, 21,304 US girls were named Lainey; the busiest of those years was 2025, with 5,738. In 2025 that was about 1 in 280 of the girls in SSA’s list for the year.
Among the states, Lainey ranked highest in South Dakota in 2025, at #1 for girls there. It was in the top 100 in 48 states (counting DC). Related spellings in the SSA files include Laney (14,360 babies since 1880), Lanny (9,644 babies since 1880), Lainie (1,967 babies since 1880) and Laynee (1,963 babies since 1880). Rarer spellings such as Lanee, Lanea and Laini are summarised on this page.