In 2025, 5,835 US boys were named Thiago, making it the 50th most common boys’ name of the year, up 5 places from #55 in 2024. That is 531 more than the 5,304 boys named Thiago in 2024. Its best rank for boys was #50, reached in this year, 2025. That year also had the most boys given the name: 5,835. For comparison, it was #334 in 2015 and unranked in 1950.
Social Security card records list Thiago in 40 years of the 146 from 1880 to 2025, starting in 1986 with 6 babies. In all, 35,233 US babies have been given the name, 0.1% of them girls and 99.9% boys. Its busiest decade was the 2020s, with 24,167 babies named Thiago.
Over the 10 years from 2016 to 2025, 31,432 US boys were named Thiago; the busiest of those years was 2025, with 5,835. In 2025 that was about 1 in 293 of the boys in SSA’s list for the year.
Among the states, Thiago ranked highest in Maryland in 2025, at #10 for boys there. It was in the top 100 in 30 states (counting DC). Related spellings in the SSA files include James (5,274,520 babies since 1880), Jim (153,938 babies since 1880), Diego (126,405 babies since 1880) and Santiago (103,965 babies since 1880). Rarer spellings such as Thyago, Tihago and Thiego are summarised on this page.