Recorded 1920–2025 · United States
Rio was most popular in 2024, when 704 American babies were given the name — ranking #898 that year. In 2025 it ranked #935, with 668 births. Across 1880–2025 the Social Security Administration has recorded 7,812 people named Rio.
Rio first appears in Social Security Administration records in 1920, which makes it about 105 years old as a recorded American name. It has been recorded in 64 of the 106 years since.
The Social Security Administration has recorded 7,812 American births named Rio between 1880 and 2025. That is recorded US births, not a world population — it counts people issued a Social Security number at birth in the United States. Of those, roughly 7,691 are estimated to be alive today.
668 American babies were named Rio in 2025, ranking #935 that year.
Rio is rising. Across 2021–2025 it averaged 634 births a year, against 147 a year across 2011–2015 — a change of +330% over the decade.
Measured on recorded births. American births overall have fallen since 2007, so most established names lose births over any recent decade — a name can shed births and still hold its rank. Compare the rank above, which is measured against the other names of the same year.
Across the whole record Rio is a unisex name — 29.2% of the 7,812 Americans given it were girls and 70.8% were boys. It changed hands: since 2004 it has gone mainly to boys, having gone mainly to girls before that. In births since 2016 it is 21% girls and 79% boys.
Counted from every US birth the Social Security Administration recorded under this name, so it reflects use rather than opinion. A name given to fewer than five babies of one sex in a year is withheld at source and is not counted.
Roughly 7,691 Americans named Rio are alive today — 98% of everyone ever recorded with the name. The median is 8 years old, and half are between 3 and 19.
An estimate, not a count. Recorded births are carried forward through the Social Security Administration’s 2023 period life table, by age and sex. That table describes mortality in one recent year, so it credits the oldest cohorts with today’s survival rather than the harsher rates they actually lived through — the further back a name peaked, the more this will overstate how many remain. It counts people issued a Social Security number at birth, not immigrants who arrived later.
How much more common the name is in each state than across the country as a whole.
See Rio on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org