In 2025, 116 US boys were named Masai, making it the 1,511th most common boys’ name of the year, up 318 places from #1,829 in 2024. That is 27 more than the 89 boys named Masai in 2024. Its best rank for boys was #1,511, reached in this year, 2025. That year also had the most boys given the name: 116. For comparison, it was #4,492 in 2015 and unranked in 1950.
Social Security card records list Masai in 37 years of the 146 from 1880 to 2025, starting in 1973 with 10 babies. In all, 882 US babies have been given the name, 2.0% of them girls and 98% boys. Its busiest decade was the 2020s, with 461 babies named Masai.
Over the 10 years from 2016 to 2025, 582 US boys were named Masai; the busiest of those years was 2025, with 116. In 2025 that was about 1 in 14,725 of the boys in SSA’s list for the year.
Among the states, Masai ranked highest in New Jersey in 2025, at #634 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Masao (1,018 babies since 1880).