In 2025, 563 US boys were named Rio, making it the 532nd most common boys’ name of the year, down 15 places from #517 in 2024. That is 30 fewer than the 593 boys named Rio in 2024. Its best rank for boys was #517, reached in 2024. That year also had the most boys given the name: 593. For comparison, it was #1,577 in 2015 and unranked in 1950.
In 2025, 105 US girls were named Rio, making it the 1,877th most common girls’ name of the year, down 57 places from #1,820 in 2024. That is 6 fewer than the 111 girls named Rio in 2024. Its best rank for girls was #1,679, reached in 2021. That year also had the most girls given the name: 124. For comparison, it was #3,974 in 2015 and unranked in 1950.
Social Security card records list Rio in 64 years of the 146 from 1880 to 2025, starting in 1920 with 5 babies. In all, 7,812 US babies have been given the name, 29% of them girls and 71% boys. Its busiest decade was the 2020s, with 3,564 babies named Rio.
Over the 10 years from 2016 to 2025, 3,541 US boys were named Rio; the busiest of those years was 2024, with 593. In 2025 that was about 1 in 3,034 of the boys in SSA’s list for the year.
Among the states, Rio ranked highest in District of Columbia in 2025, at #163 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Rey (10,222 babies since 1880), Riya (6,273 babies since 1880), Ria (4,115 babies since 1880) and Rya (1,928 babies since 1880). Rarer spellings such as Riah, Ryia and Riha are summarised on this page.