Total births
722
Boys' name · since 1990
Caio
Caio has 722 recorded births since 1990 in federal Social Security data, most heavily in 2023 -- full year-by-year trend, decade aggregates, and state rankings follow.
- #3751
- among boys today
- 722
- born since 1990
- 2010s
- peak decade
- 74%
- more common than other boys
Caio currently ranks #3751 among boys' names in America, with 722 babies recorded since 1990.
Caio has 722 recorded births among boys since 1990, per the U.S. Social Security Administration, ranked #3751 as of the latest data, more common than 74% of boys, busiest in the 2010s -- see the year-by-year trends, decade totals, and state-level distribution below, all drawn directly from SSA birth-registration files spanning 1990 to 2025.
- #3751 among boys today
- 722 born since 1990
- 2010s peak decade
- 74% more common than other boys
Data updated Jun 2026
The verdict
Caio is currently the #3751 boys' name in America, more common than 74% of boys - 722 born since 1990, peaking in the 2010s.
- #3751
- among boys today
- 722
- born since 1990
- 2010s
- peak decade
- 74%
- more common than other boys
Caio vs. every other boys name in current SSA rankings
#3751
of 14,294 boys in use
More common than 74% of names given to boys today.
2010s
Peak decade
35% of everyone ever named Caio was born in this single decade.
2023
Single peak year
40 babies were named Caio in 2023 - its busiest year on record.
How Caio compares
722 Top 36% higher than 64% of 14,294 names currently given to boys
Based on all-time total births among currently-ranked boys names. Names with fewer occurrences are grouped into wider buckets on the right.
Source U.S. Social Security Administration, national baby name data
How the numbers stack up
Caio's all-time total is 97% above the median boys name, and Liam still leads by a wide margin.
| Metric | Caio | Median boys name (Elchonon) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 722 | 367 | 358,536 |
| Peak-year births | 40 | 23 | 22,252 |
Caio's usage pattern, beyond the headline number
Splitting Caio's full recorded timeline at 2008, 70% of its total births fall in the more recent half of the record versus 30% in the earlier half -- usage has skewed toward the present, not a one-decade spike. Its quietest year on record was 1991, with just 5 recorded births -- worth weighing against the 2023 peak of 40 to see the full range of the name's swing in popularity.
Caio at a glance
Outside the top 1,000Peak year
2023
Current rank
#3,751
Active since
1990
Caio popularity over time
Annual U.S. births registered with the Social Security Administration · 1990–2025
- Peak year (2023)
- 40
- Annual births at peak, across 36 years of records
Caio by decade
Total births in each ten-year window, peak vs trough at a glance
2010s was Caio's strongest decade.
250 babies received the name during that ten-year window, about 35% of all-time use.
Caio births by decade
Total births in each ten-year window
- 1990s 73
1990s
73 births
- 2000s
2000s
209 births
- 2010s
2010s
250 births
- 2020s
2020s
190 births
What this shows Peak: 2010s at 250 births (35% of all-time use).
How Caio compares to similarly-sized names
Years in SSA records vs. share of all-time use concentrated in the single peak year, among 15 boys names closest to Caio's total volume
Caio vs 15 similarly-sized boys names
Caio by state
Where Caio concentrates geographically, total births since 1990
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Massachusetts | | 85 | 11.8% |
| #2 | California | | 58 | 8.0% |
| #3 | Florida | | 49 | 6.8% |
Massachusetts share of Caio's total US births 11.8%
Even split
85 of 722 births nationwide. Compared to a flat distribution across 3 reporting states.
Frequently Asked Questions
How popular is the name Caio? ▼
Caio has been given to 722 babies in the U.S. since 1990, according to SSA data. Among boys, it ranks #3751 as of the latest data. 40 babies were born in 2023, its single highest year.
When was Caio most popular? ▼
Caio was most popular in the 2010s decade with 250 total births. The single peak year was 2023.
Where is Caio most popular? ▼
The top states for the name Caio are Massachusetts (85 births), California (58 births), Florida (49 births).
How long has the name Caio been used? ▼
Records for Caio go back to 1990, giving 36 years of history through 2025.
What names are similar to Caio? ▼
Names with a similar sound or spelling include Caiden, Cairo, Cain, Caius, and 4 more. These share a common prefix and are also used for boys.
What to do with Caio's data
- Caio's usage has stayed within range of its 2010s decade-level peak (250 total births) through the 2020s (190) -- a comparatively stable name, not a fading trend.
- Massachusetts records the most Caios (85 births) -- see the full state breakdown if geography matters to your decision. Massachusetts names
- Weighing it against an alternative? Put two names side by side. Compare names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Caio
Nearby Names Like Caio
Names with a similar sound, spelling, or feel to Caio
Caiden Boy
#546 23,341 births
Cairo Boy
#355 9,415 births
Cain Boy
#981 7,628 births
Caius Boy
#1060 2,329 births
Caine Boy
#2272 2,104 births
Compare Caio side by side: Caio vs Caiden Caio vs Cairo Caio vs Cain
Related Names
Names with a similar popularity rank to Caio
Data Sources
Data as of June 2026. Source: U.S. Social Security Administration (SSA).
According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 1990–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Caio: #3751 Boys' Name - 722 Births, Peak 2023." NameAlmanac. Accessed via https://namealmanac.com/name/caio. Licensed CC BY-SA 4.0.
Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Caio draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.