Total births
346
Unisex name · since 2003
Kaydyn
Kaydyn has 346 recorded births since 2003 in federal Social Security data, most heavily in 2009 -- full year-by-year trend, decade aggregates, and state rankings follow.
- #8722
- among boys today
- 346
- born since 2003
- 2010s
- peak decade
- 39%
- more common than other boys
346 babies have been named Kaydyn since 2003, making it today's #8722 unisex name.
Kaydyn has 346 recorded births among boys since 2003, per the U.S. Social Security Administration, ranked #8722 as of the latest data, more common than 39% 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 2003 to 2025.
- #8722 among boys today
- 346 born since 2003
- 2010s peak decade
- 39% more common than other boys
Data updated Jun 2026
The verdict
Kaydyn is currently the #8722 unisex name in America, more common than 39% of boys - 346 born since 2003, peaking in the 2010s.
- #8722
- among boys today
- 346
- born since 2003
- 2010s
- peak decade
- 39%
- more common than other boys
Kaydyn vs. every other boys name in current SSA rankings
#8722
of 14,294 boys in use
More common than 39% of names given to boys today.
2010s
Peak decade
54% of everyone ever named Kaydyn was born in this single decade.
2009
Single peak year
29 babies were named Kaydyn in 2009 - its busiest year on record.
How Kaydyn compares
346 49th percentile among 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
Kaydyn's all-time total is 6% below the median boys name, and Liam still leads by a wide margin.
| Metric | Kaydyn | Median boys name (Elchonon) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 346 | 367 | 358,536 |
| Peak-year births | 29 | 23 | 22,252 |
Kaydyn's usage pattern, beyond the headline number
Splitting Kaydyn's full recorded timeline at 2015, 48% of its total births fall in the more recent half of the record versus 52% in the earlier half -- a fairly even split across the full record. Its quietest year on record was 2003, with just 5 recorded births -- worth weighing against the 2009 peak of 29 to see the full range of the name's swing in popularity.
Kaydyn at a glance
Outside the top 1,000Peak year
2009
Current rank
#8,722
Active since
2003
Kaydyn popularity over time - boys
Annual U.S. births registered with the Social Security Administration · 2003–2025
- Peak year (2009)
- 29
- Annual births at peak, across 23 years of records
Kaydyn popularity over time - girls
228 total births recorded since 2000 (Kaydyn as girls' name)
Kaydyn by decade
Total births in each ten-year window, peak vs trough at a glance
2010s was Kaydyn's strongest decade.
186 babies received the name during that ten-year window, about 54% of all-time use.
Kaydyn births by decade
Total births in each ten-year window
- 2000s
2000s
84 births
- 2010s
2010s
186 births
- 2020s
2020s
76 births
What this shows Peak: 2010s at 186 births (54% of all-time use).
Kaydyn by state
Where Kaydyn concentrates geographically, total births since 2003
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Texas | | 5 | 1.4% |
Texas share of Kaydyn's total US births 1.4%
5 of 346 births nationwide.
Frequently Asked Questions
How popular is the name Kaydyn? ▼
346 babies have been named Kaydyn since 2003. It currently ranks #8722 among boys. The peak year was 2009 with 29 births.
When was Kaydyn most popular? ▼
Kaydyn was most popular in the 2010s decade with 186 total births. The single peak year was 2009.
Where is Kaydyn most popular? ▼
The top states for the name Kaydyn are Texas (5 births).
Is Kaydyn a unisex name? ▼
Yes, Kaydyn is used for both boys and girls. As a boy's name it has 346 births, and as a girl's name it has 228 births.
How long has the name Kaydyn been used? ▼
The SSA has tracked Kaydyn since 2003 -- 23 years through the most recent 2025 data.
What names are similar to Kaydyn? ▼
Names with a similar sound or spelling include Kayden, Kayson, Kaysen, Kay, and 4 more. These share a common prefix and are also used for boys.
What to do with Kaydyn's data
- Kaydyn's usage has stayed within range of its 2010s decade-level peak (186 total births) through the 2020s (76) -- a comparatively stable name, not a fading trend.
- Texas records the most Kaydyns (5 births) -- see the full state breakdown if geography matters to your decision. Texas 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 Kaydyn
Nearby Names Like Kaydyn
Names with a similar sound, spelling, or feel to Kaydyn
Kayden Boy
#125 73,606 births
Kayson Boy
#291 15,201 births
Kaysen Boy
#597 6,640 births
Kay Boy
#6208 3,924 births
Kayce Boy
#419 3,316 births
Compare Kaydyn side by side: Kaydyn vs Kayden Kaydyn vs Kayson Kaydyn vs Kaysen
Related Names
Names with a similar popularity rank to Kaydyn
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, 2003–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Kaydyn: #8722 Unisex Name - 346 Births, Peak 2009." NameAlmanac. Accessed via https://namealmanac.com/name/kaydyn. 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 Kaydyn 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.