Gaius
Boy name · #3599 in 2025 · Very rare
How old is the name Gaius? In official American birth records, Gaius has been tracked continuously since 1920, giving it 105 years of documented American history.
Gaius is currently the #3599 boy name in the United States — 31 babies received it in 2025. A decade ago it stood at #5746, so the name has been rising over the past ten years. Roughly one in every 58,065 boys born in 2025 was named Gaius.
The 105-year story
The historical record for Gaius begins in 1920 with 8 recorded births. Its peak came in 2014, when 42 boys were named Gaius — good for #2805 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 Gaius per year. Source: Official national birth records.
Unlock the 5-year forecast and compare Gaius against up to 5 other names.
Uniqueness: will there be another Gaius in class?
On our rarity read — which blends how common Gaius is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Gaius will likely be the only one in the room, with the occasional spelling-out as the price.
Where Gaius is most common
State-level data for Gaius 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 Gaius
Statistically, parents drawn to Gaius tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Arius, Sirius, Tiberius, Kidus, and Cylus.
AriusSiriusTiberiusKidusCylusTytusTidusSylus
Rank history (last 25 years)
| Year | Babies named Gaius | Rank |
|---|---|---|
| 2025 | 31 | #3583 |
| 2024 | 31 | #3605 |
| 2023 | 17 | #5470 |
| 2022 | 23 | #4442 |
| 2021 | 19 | #4936 |
| 2020 | 30 | #3570 |
| 2019 | 22 | #4480 |
| 2018 | 19 | #4918 |
| 2017 | 28 | #3781 |
| 2016 | 23 | #4327 |
| 2015 | 15 | #5746 |
| 2014 | 42 | #2805 |
| 2013 | 30 | #3497 |
| 2012 | 24 | #4131 |
| 2011 | 13 | #6256 |
| 2010 | 13 | #6359 |
| 2009 | 20 | #4748 |
| 2008 | 16 | #5487 |
| 2007 | 17 | #5210 |
| 2006 | 14 | #5781 |
| 2005 | 7 | #9115 |
| 2004 | 6 | #9948 |
| 1998 | 5 | #9631 |
| 1984 | 5 | #6315 |
| 1983 | 5 | #6238 |
Frequently asked questions
How old is the name Gaius?
In official American birth records, the name Gaius first appeared in 1920 (over 105 years ago), when 8 newborn boys received the name. It has been tracked in modern national records for 105 years.
Is Gaius a popular boy name?
Gaius ranked #3599 among boys in 2025 with 31 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #5746.
When was the name Gaius most popular?
Gaius peaked in 2014, when 42 American boys received the name (ranked #2805 that year). Since 2014 the name has declined from that high.
How rare is the name Gaius?
In 2025, roughly 1 in 58,065 newborn American boys was named Gaius. 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.