Kacyn
#4,617 in 2025UnisexBoys' nameGirls' nameMeaning not yet documented
Kacyn has been given to 316 babies in the U.S. since 2009. In 2025 it ranked #4,617 of 13,926 boys’ names in use. Its peak year was 2018, with 25 recorded. It's used for both sexes: 83% boys, 17% girls all-time.
Babies named Kacyn, 2025
1 in 151,000
Kacyn over time, 1880–2025
Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.
Girls or boys — Kacyn over time
In 2025, Kacyn went to 0% girls and 100% boys.
A sex is only published in years it reached five applications, so a stretch at 0% or 100% means the other side stayed under that floor — not that it was never used.
How common is Kacyn?
Everything below is computed from the 2025 data — the most recent year available.
- Among all babies, 2025
- 1 in 151,000
- 22 of 3,315,165 births
- Among boys only
- 1 in 77,600
- <0.01% of boys
- Rank, 2025
- #4,617
- of 13,926 boys’ names in use
- Coin-flip room size
- 104,451 kids
- Even odds of a second one
Where Kacyn sits on the popularity scale
Chance at least one other child shares the name
If the other children were drawn at random from the 2025 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.
Put another way: gather 104,451 children born in 2025 and it's an even bet that one of them is another Kacyn. In a class of 30 the chance is Under 1%.
When Kacyns were born
Half of everyone ever recorded as Kacyn was born before 2019 — so the typical Kacyn is around 6 today.
- Biggest decade
- 2010s
- 52.7% of all use
- Born in the last 25 years
- 100.0%
- A modern name
- Recorded since 1950
- 262
- People you could plausibly meet
2010s — 52.7% of all recorded uses (138).
Is Kacyn rising or falling?
Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.
- Rank vs 1 year ago
- +1,705
- Places climbed
- Rank vs 5 years ago
- −135
- Places dropped
- Rank vs 10 years ago
- +4,524
- Places climbed
- Births vs 10 years ago
- 2.75×
- More babies than then
- Share of its own peak
- 88.0%
- Peak was 2018 (25)
- Years since peak
- 7
- Years
- Year-to-year steadiness
- Volatile
- 31.0% average annual change
Spellings of Kacyn
Kacyn is not the most common spelling — Kaden is, with 29.5% against Kacyn's 0.11%.
Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.
Kacyn by the numbers
The raw record for each sex the name is used for.
As a boy's name
Names similar to Kacyn
Matched on shared beginnings and endings, similar length, and comparable popularity.
Sibling names for Kacyn
Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.