In 2025, 5 US boys were named Thao, making it the 13,686th most common boys’ name of the year. Its best rank for boys was #3,092, reached in 1984. The most boys given the name in a single year was 16, in 1991. For comparison, it was unranked (under five boys) in 2015 and unranked in 1950.
Fewer than five US girls were named Thao in 2025, so it does not appear in that year’s SSA list for girls. Its best rank for girls was #1,865, reached in 1984. That year also had the most girls given the name: 58. For comparison, it was #18,870 in 2015 and unranked in 1950.
Social Security card records list Thao in 43 years of the 146 from 1880 to 2025, starting in 1975 with 6 babies. In all, 1,237 US babies have been given the name, 84% of them girls and 16% boys. Its busiest decade was the 1980s, with 532 babies named Thao.
Over the 10 years from 2016 to 2025, 5 US boys were named Thao; the busiest of those years was 2025, with 5. In 2025 that was about 1 in 341,615 of the boys in SSA’s list for the year.
Related spellings in the SSA files include Tai (4,937 babies since 1880) and Taha (2,424 babies since 1880).