Lio
Boy name · #3922 in 2025 · Very rare
How old is the name Lio? In official American birth records, Lio has been tracked continuously since 2004, giving it 21 years of documented American history.
Lio is currently the #3922 boy name in the United States — 28 babies received it in 2025. A decade ago it stood at #5507, so the name has been rising over the past ten years. Roughly one in every 64,286 boys born in 2025 was named Lio.
Babies named Lio per year. Source: Official national birth records.
The 21-year story
Lio first appears in the Social Security records in 2004, when 6 boys received the name. Its all-time peak is essentially right now: 2024, with 44 babies and a rank of #2873. Names at their peak can keep climbing — or be one trend cycle from the long slide that eventually hits most popular names. 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.
Unlock the 5-year forecast and compare Lio against up to 5 other names.
Uniqueness: will there be another Lio in class?
On our rarity read — which blends how common Lio is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Lio will likely be the only one in the room, with the occasional spelling-out as the price.
Where Lio is most common
State-level data for Lio 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 Lio
Statistically, parents drawn to Lio tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Amilio, Amelio, Ario, Akio, and Geo.
AmilioAmelioArioAkioGeoMiroLakshMako
Rank history (last 25 years)
| Year | Babies named Lio | Rank |
|---|---|---|
| 2025 | 28 | #3848 |
| 2024 | 44 | #2873 |
| 2023 | 37 | #3228 |
| 2022 | 28 | #3879 |
| 2021 | 21 | #4628 |
| 2020 | 20 | #4698 |
| 2019 | 25 | #4114 |
| 2018 | 22 | #4476 |
| 2017 | 24 | #4224 |
| 2016 | 12 | #6726 |
| 2015 | 16 | #5507 |
| 2014 | 20 | #4702 |
| 2013 | 20 | #4621 |
| 2012 | 19 | #4862 |
| 2011 | 5 | #12287 |
| 2010 | 9 | #8139 |
| 2008 | 9 | #8324 |
| 2006 | 6 | #10662 |
| 2004 | 6 | #9948 |
Frequently asked questions
How old is the name Lio?
In official American birth records, the name Lio first appeared in 2004 (over 21 years ago), when 6 newborn boys received the name. It has been tracked in modern national records for 21 years.
Is Lio a popular boy name?
Lio ranked #3922 among boys in 2025 with 28 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #5507.
When was the name Lio most popular?
Lio peaked in 2024, when 44 American boys received the name (ranked #2873 that year). That peak is current — the name is at or near its all-time high right now.
How rare is the name Lio?
In 2025, roughly 1 in 64,286 newborn American boys was named Lio. 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.