Caidyn
Anglicized form of the Gaelic name Cáedan meaning "battle warrior".
Name Census estimates that about 1,235 living Americans carry the first name Caidyn. It appears on both sides of the gender split, with 64.7% of registrations being male. The average person named Caidyn today is around 14 years old, and the year with the single highest number of Caidyn births was 2011 (95 babies).
This page is the full Name Census profile for Caidyn. Below you will find a gender breakdown showing how the name splits between male and female registrations, a year-by-year popularity chart stretching back to 1880, decade-level totals, the top US states for this name, its meaning and etymology, and a set of frequently asked questions with data-backed answers.
For a British comparison, Name Census UK has a UK baby-name profile for Caidyn with official rankings and popularity over time.
Key insights
- • Caidyn sits in rare territory as a truly gender-neutral name, given to boys and girls in near-equal numbers.
- • Caidyn is a relatively new arrival in the SSA data. The average bearer is just 14 years old, meaning it gained most of its traction in the last two decades.
People living today
1.2K
~ 1 in 277,534 Americans
Peak year
2011
95 babies that year
Average age
14
years old
2024 SSA rank
#4,199
Tracked since 1999
Census
Caidyn in the 2020 Census
The 2020 Census recorded 892 people with the first name Caidyn, which placed it at #13,511 in the published first-name tables. This is a snapshot of people who already had the name at the time of the Census.
The SSA sections elsewhere on this page answer a different question: how often parents gave the name to babies over time. The "people living today" figure on this page is different again: it is a current estimate built from SSA birth records and age-based survival rates, so the two numbers are not expected to match exactly.
2020 Census rank
#13,511
National first-name rank
People counted
892
892 in the published race/origin table
Per 100,000
0.3
People with this name in 2020
Largest reported group
White
53.3% of people with this name
Demographics
Ancestry and ethnicity for Caidyn
In the 2020 Census race and Hispanic-origin table, the largest reported group for people named Caidyn is White at 53.3%. The next largest groups are Black (28.3%) and Two or More Races (9.9%). These figures describe the people who had the name in 2020, not any inherent property of the name itself.
The bar chart below shows how people with the first name Caidyn described their own race and ethnicity on the 2020 Census form. The Census Bureau groups responses into six broad categories: White, Black or African American, Hispanic or Latino, Asian and Pacific Islander, American Indian and Alaska Native, and Two or More Races. When a category has too few respondents for a given name, the Bureau suppresses the figure to protect individual privacy, which is why some names show fewer than six slices.
Percentages are shown so the breakdown is easy to read across every published category. Because the 2020 Census first-name file also includes raw headcounts for each group, Name Census can show those alongside the percentages in the legend and hover tooltip.
Keep in mind that these are self-reported numbers. A first name does not determine a person's race or ethnicity, and the distribution you see here reflects the specific population who happened to carry the name Caidyn at the time of the 2020 Census, not any inherent property of the name itself.
- White53.3% · 475
- Black or African American28.3% · 252
- Two or more races9.9% · 88
- Hispanic or Latino6.1% · 54
- American Indian and Alaska Native1.6% · 14
- Asian and Pacific Islander1.0% · 9
Gender
Gender distribution for Caidyn
Caidyn is one of the more evenly split names in the SSA data. Of the 1,247 total registrations, 807 (64.7%) were male and 440 (35.3%) were female.
Caidyn as a male name
- Ranked #4,199 in 2024
- 25 male births in 2024
- Peak: 2011 (64 births)
Caidyn as a female name
- Ranked #15,669 in 2024
- 5 female births in 2024
- Peak: 2008 (39 births)
2020 Census snapshot
The 2020 Census sex table shows Caidyn on both sides of the split. Of the 893 people counted with this name, 522 were male (58.5%) and 371 were female (41.5%).
Popularity
Caidyn: popularity over time
The SSA tracks Caidyn from the 1990s through to the 2020s, spanning 4 decades of birth certificate data. The biggest single decade for the name was the 2010s, with 619 total registrations. Usage has dropped considerably from its 2010s peak. The most recent decade brought in only a fraction of the registrations that the name once attracted.
Babies born per year
Decades
Caidyn by decade
The table below breaks the full SSA timeline into ten-year windows. Each row shows how many male and female babies were given the name Caidyn during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.
Geography
Where Caidyns live
The SSA's state-level files cover 12 states and territories. Texas, Florida, Georgia recorded the most babies named Caidyn, while Virginia, Pennsylvania, Michigan recorded the fewest. The average across all reporting states is about 14 registrations each.
Origin
Meaning and history of Caidyn
The given name Caidyn is a relatively modern invention, likely derived from the Welsh name Cadyn or the Irish Cadan. Both of these names trace their origins to the Celtic word "cad," meaning "battle" or "war." As such, Caidyn can be interpreted as a name imbued with strength and warrior spirit.
In its earliest forms, Caidyn was primarily found in Wales and Ireland, where it served as a masculine name bestowed upon sons born into families with strong martial traditions. While the name does not appear to have any direct historical references in ancient texts or religious scriptures, its Celtic roots suggest it may have been used during the medieval period when Welsh and Irish cultures flourished.
The first recorded instances of the name Caidyn can be found in genealogical records from the 18th and 19th centuries, primarily in Wales and Ireland. One notable early bearer of the name was Caidyn ap Rhys (1760-1832), a Welsh farmer and landowner who played a pivotal role in preserving the Welsh language and cultural traditions in his local community.
Over the centuries, several other individuals have carried the name Caidyn, though their impact on history may have been more localized or obscured by the passage of time. These include Caidyn O'Connor (1810-1890), an Irish soldier who fought in the Crimean War, and Caidyn Jones (1865-1942), a Welsh poet and writer whose works celebrated the beauty of the Welsh countryside.
As the name gained popularity in the modern era, it has been borne by several notable figures, such as Caidyn Williams (1920-2002), a Welsh rugby player who represented his country in international competitions during the 1940s and 1950s. More recently, Caidyn Boyle (born 1985) is an Irish singer and musician who has gained recognition for her contemporary interpretations of traditional Celtic folk music.
While the name Caidyn may be relatively new in its current spelling and usage, its Celtic roots and associations with strength and warrior spirit have endured, making it a unique and meaningful choice for parents seeking to honor their cultural heritage or instill a sense of resilience in their children.
People
Caidyn + last name combinations
How many people share a full name with Caidyn as the first name? Click a combination below to see the estimate, or search any pairing.
Related
Other names starting with C
Other first names starting with C with a similar number of bearers.
FAQ
Caidyn: questions and answers
How many people in the U.S. are named Caidyn?
Name Census puts the figure at roughly 1,235 living Americans. We arrive at this by taking every SSA birth registration for Caidyn going back to 1880 and adjusting each cohort for expected survival using CDC actuarial life tables. The result is an age-weighted living-bearer count, not a raw birth total. That works out to about 1 in 277,534 US residents.
Is Caidyn a common name?
We classify Caidyn as "Rare". It ranks above 91.4% of all first names in the SSA dataset by living bearers. Across the full history of the data, 1,247 babies have been registered with this name.
When was Caidyn most popular?
The single biggest year for Caidyn was 2011, when 95 babies received the name. The fact that the average living Caidyn is about 14 years old gives you a rough sense of which era contributed the most bearers who are still alive today.
How common was Caidyn in the 2020 Census?
The published 2020 Census first-name tables recorded 892 people with the name Caidyn, or 0.30 per 100,000 residents. That placed it at #13,511 in the national Census ranking for first names.
Why is the Census count different from the living estimate?
Because they measure different things. The Census figure is a count of people who had the name Caidyn in 2020. The living estimate aims to answer a current question instead: how many people with the name are alive today, based on SSA birth records and age-based survival rates. Since one number is a 2020 snapshot and the other is a present-day estimate, they are not expected to be identical.
What does the Census say about the gender split for Caidyn?
The 2020 Census sex table shows Caidyn on both sides of the split. Of the 893 people counted with this name, 522 were male (58.5%) and 371 were female (41.5%). The Census view is a snapshot of people living with the name in 2020, while the SSA section above tracks births across time.
What does the Census say about the background of people named Caidyn?
In the 2020 Census race and Hispanic-origin table, the largest reported group for people named Caidyn is White at 53.3%. The next largest groups are Black (28.3%) and Two or More Races (9.9%). These figures describe the people who had the name in 2020, not any inherent property of the name itself. The percentages in the chart above come from self-reported race and Hispanic-origin responses in the 2020 Census.
Which group reports the name Caidyn most often in the Census?
White is the largest reported group for people named Caidyn in the 2020 Census, accounting for 53.3% (475 people in the published table).
Why can the Census sex total and race total differ slightly?
The Census Bureau published separate 2020 tables for sex and for race/Hispanic origin, and the released figures can differ slightly because of privacy protection in the public files. That is why this page treats the gender section and the race/origin section as two related snapshots instead of forcing them into one identical total.
Does every first name have Census demographic data?
No. The public Census first-name release only includes names that met the Bureau's publication rules, so many rarer names in the SSA files have no Census demographic snapshot. When that happens, the SSA trend, gender history, and state sections still appear, but the 2020 Census demographic sections are omitted.
What does the SSA popularity chart show?
The chart tracks births, not the number of people alive with the name today. Each point shows how many babies were given the name Caidyn in that year. That makes it useful for spotting when the name rose, peaked, or faded.
Is Caidyn a male name?
Yes, 64.7% of people registered as Caidyn in the SSA data are male. You can see the full per-sex comparison in the gender distribution section above, which includes the latest year rank, birth count, and peak year for each sex.
Is Caidyn still being used today?
Yes. The SSA still recorded Caidyn in 2024, and the page above shows its latest-year rank where available. A name can be well past its peak and still remain in steady use, especially if it built up a large population over earlier decades.
Why can a name have a lot of living bearers even if it is not trendy now?
Because living-bearer counts and current baby-name popularity measure different things. A name like Caidyn can build up a very large population over many decades, even if fewer parents are choosing it now than they did at its peak.
Where does this data come from?
First-name figures come from the Social Security Administration's national baby name files, which cover every name on a birth certificate from 1880 to 2024. Living-bearer estimates layer in CDC actuarial life tables broken out by sex to account for mortality. The population baseline (342,754,338) is the Census Bureau's latest national estimate. You can read the full calculation on our methodology page.
How common is the name Caidyn?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.