In 2025, 265 US boys were named Alistair, making it the 897th most common boys’ name of the year, up 12 places from #909 in 2024. That is 8 more than the 257 boys named Alistair in 2024. Its best rank for boys was #885, reached in 2016. The most boys given the name in a single year was 265, in 2025. For comparison, it was #1,023 in 2015 and unranked in 1950.
Social Security card records list Alistair in 59 years of the 146 from 1880 to 2025, starting in 1956 with 7 babies. In all, 4,088 US babies have been given the name, all of them boys. Its busiest decade was the 2010s, with 1,722 babies named Alistair.
Over the 10 years from 2016 to 2025, 2,399 US boys were named Alistair; the busiest of those years was 2025, with 265. In 2025 that was about 1 in 6,446 of the boys in SSA’s list for the year.
Among the states, Alistair ranked highest in Colorado in 2025, at #537 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Alexander (740,668 babies since 1880), Alejandro (147,470 babies since 1880), Alexandre (5,389 babies since 1880) and Lisandro (2,416 babies since 1880). Rarer spellings such as Alasdair, Alistar and Allistair are summarised on this page.