Rio
Girl name · #1875 in 2025 · Very rare
How old is the name Rio? In official American birth records, Rio has been tracked continuously since 1930, giving it 95 years of documented American history.
Rio is currently the #1875 girl name in the United States — 105 babies received it in 2025. A decade ago it stood at #3915, so the name has been rising over the past ten years. Roughly one in every 17,143 girls born in 2025 was named Rio.
The 95-year story
Rio first appears in the Social Security records in 1930, when 8 girls received the name. Its peak came in 2021, when 124 girls were named Rio — good for #1676 that year. Today's parents encounter it on its way down the popularity curve, which for many parents is exactly the appeal. Following the curve matters more than today's snapshot: a name's position on its rise-peak-decline arc is the best predictor of how common it will feel in a kindergarten class five years from now.
Babies named Rio per year. Source: Official national birth records.
Unlock the 5-year forecast and compare Rio against up to 5 other names.
Uniqueness: will there be another Rio in class?
On our rarity read — which blends how common Rio is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Rio will likely be the only one in the room, with the occasional spelling-out as the price.
Where Rio is most common
State-level data for Rio is too sparse in 2025 to rank by rate — in most states its count falls below the SSA's per-state reporting threshold (counts under 5 are withheld).
Names like Rio
Statistically, parents drawn to Rio tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Reem, Raine, Ryah, Aiko, and Coco.
ReemRaineRyahAikoCocoRuhiRyaRain
Rank history (last 25 years)
| Year | Babies named Rio | Rank |
|---|---|---|
| 2025 | 105 | #1872 |
| 2024 | 111 | #1810 |
| 2023 | 106 | #1878 |
| 2022 | 119 | #1742 |
| 2021 | 124 | #1676 |
| 2020 | 91 | #2034 |
| 2019 | 110 | #1844 |
| 2018 | 77 | #2361 |
| 2017 | 51 | #3145 |
| 2016 | 61 | #2798 |
| 2015 | 38 | #3915 |
| 2014 | 45 | #3486 |
| 2013 | 43 | #3573 |
| 2012 | 51 | #3213 |
| 2011 | 56 | #3014 |
| 2010 | 58 | #2938 |
| 2009 | 68 | #2672 |
| 2008 | 59 | #2957 |
| 2007 | 54 | #3168 |
| 2006 | 49 | #3316 |
| 2005 | 47 | #3257 |
| 2004 | 41 | #3566 |
| 2003 | 56 | #2771 |
| 2002 | 33 | #3889 |
| 2001 | 42 | #3256 |
Frequently asked questions
How old is the name Rio?
In official American birth records, the name Rio first appeared in 1930 (over 95 years ago), when 8 newborn girls received the name. It has been tracked in modern national records for 95 years.
Is Rio a popular girl name?
Rio ranked #1875 among girls in 2025 with 105 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #3915.
When was the name Rio most popular?
Rio peaked in 2021, when 124 American girls received the name (ranked #1676 that year). Since 2021 the name has declined from that high.
How rare is the name Rio?
In 2025, roughly 1 in 17,143 newborn American girls was named Rio. On our rarity scale (rarity blended with momentum) we classify it as "very rare".
Data source: Official American birth records, 1880–2025, national and state files. Counts reflect registered birth records for American families.