Caius Name Meaning, Origin and Popularity
Caius is predominantly used for boys. The statistics below show this exact spelling in official U.S. records.
How Do You Spell Caius?
Caius is spelled C-A-I-U-S. The name has 5 letters.
Caius at a Glance
- Usage
- Predominantly used for boys
- Meaning
- Caius is derived from the Latin personal name “Gaius”, which is of uncertain etymology but may be related to the Latin verb “gaudere”, meaning…
- Origin
- Caius is commonly associated with ancient Roman use as a praenomen, or personal name, in historical Roman naming conventions.
- Pronunciation
- KAI-uhs · 2 syllables
Caius Popularity in 2025
Rank#927
Recorded Births254
- Boys usage rose 133 places to #927 and recorded 48 more births compared with 2024.
Figures reflect this exact spelling in the latest available U.S. Social Security Administration records. See the complete year-by-year trend.
What Does the Name Caius Mean?
Caius is derived from the Latin personal name “Gaius”, which is of uncertain etymology but may be related to the Latin verb “gaudere”, meaning “to rejoice.”
Origin: Caius is commonly associated with ancient Roman use as a praenomen, or personal name, in historical Roman naming conventions.
How Do You Pronounce Caius?
PronunciationKAI-uhs
Syllables2
What Is the History of the Name Caius?
- History
- The name Caius appears in various classical Roman texts and inscriptions as a personal name, indicating its use in Roman society although its precise origins remain unclear.
Caius Popularity by Year
The table below shows the most recent available records for this exact spelling from 2002 through 2025. Use the full history page to explore every recorded year.
| Year | Usage Category | Recorded Births | National Rank |
|---|---|---|---|
| 2025 | Boys | 254 | #927 |
| 2024 | Boys | 206 | #1,060 |
| 2023 | Boys | 140 | #1,346 |
| 2022 | Boys | 150 | #1,282 |
| 2021 | Boys | 138 | #1,339 |
| 2020 | Boys | 156 | #1,209 |
| 2019 | Boys | 137 | #1,327 |
| 2018 | Boys | 130 | #1,360 |
| 2017 | Boys | 110 | #1,510 |
| 2016 | Boys | 153 | #1,221 |
| 2015 | Boys | 138 | #1,287 |
| 2014 | Boys | 124 | #1,375 |
| 2013 | Boys | 109 | #1,492 |
| 2012 | Boys | 74 | #1,923 |
| 2011 | Boys | 44 | #2,699 |
| 2010 | Boys | 49 | #2,511 |
| 2009 | Boys | 43 | #2,800 |
| 2008 | Boys | 27 | #3,823 |
| 2007 | Boys | 29 | #3,591 |
| 2006 | Boys | 15 | #5,525 |
| 2005 | Boys | 23 | #3,941 |
| 2004 | Boys | 14 | #5,492 |
| 2003 | Boys | 15 | #5,035 |
| 2002 | Boys | 13 | #5,395 |
When Was Caius Most Popular?
Peak years are based on the highest recorded birth totals for this exact spelling and usage category. They are ordered by birth count, not chronologically.
2025 · Boys
254 recorded births
National rank #927
2024 · Boys
206 recorded births
National rank #1,060
2020 · Boys
156 recorded births
National rank #1,209
2016 · Boys
153 recorded births
National rank #1,221
Where Caius Ranked Highest in 2025
State rankings are calculated separately for girls and boys within each state. The SSA omits state-level names recorded fewer than five times, so low visible counts can still represent a relatively high state rank.
Top States for Boys
| State | Rank | Recorded Births |
|---|---|---|
| MD | #571 | 8 |
| MN | #586 | 8 |
| IN | #621 | 10 |
| TN | #638 | 11 |
| MA | #690 | 6 |
| OK | #698 | 5 |
| MO | #709 | 7 |
| OH | #710 | 12 |