Kaytlyn
Kaytlyn was the 14061st most popular name for girls in 2025, given to 6 babies. Its best year was 1995, when it ranked 1168th; the most babies were born in 1998 (158). Over the last ten years it has moved down 6,257 places. More babies were named Kaytlyn in the 1990s than in any other decade.
Meaning (as Kaitlyn) spelling of Caitlin (Irish Catherine) · Irish, French, Greek
- Rank in 2025
- #14,061 girls, down 4,149 places since 2020
- Babies in 2025
- 6girls
- Girls and boys
- Almost always a girl’s name2021–2025
- Peak year
- 1998158 babies
- Total since 1880
- 2,722babies recorded
What does the name Kaytlyn mean?
Kaytlyn is a spelling of Kaitlyn, pronounced the same way, so it shares Kaitlyn's meaning and origin.
Kaitlyn is one of the modern American spellings of Caitlin, which Wiktionary describes as the Irish equivalent of Catherine. Irish Caitlín came from Old French Cateline, reshaped with the Irish diminutive ending -ín. Catherine itself goes back to Greek Aikaterine, which DMNES calls of uncertain origin; the link with Greek katharos, pure, is a later association that DMNES rejects. US records show Kaitlyn from the early 1970s, with its peak around 2000.
Caitlín (Irish, “Catherine”)Αἰκατερίνη (Ancient Greek, “Katherine (origin uncertain)”)
How sure is this? Uncertain. Meaning only through Catherine, whose origin DMNES calls uncertain.
Other explanations you may read: Means 'pure' (Greek katharos). DMNES says Katherine is unrelated to that word..
Related names: Caitlin, Katelyn, Catherine, Kate, Katie.
See also: Irish names.
Sources for this meaning
- Wiktionary, entry 'Kaitlyn' (English section), Wiktionary (CC BY-SA 4.0; facts restated, no text reused)
- Wiktionary, entry 'Caitlín' (Irish section), Wiktionary (CC BY-SA 4.0; facts restated, no text reused)
- Dictionary of Medieval Names from European Sources, ed. S. L. Uckelman, Edition 2023 no. 1, s.v. 'Katherine', DMNES (Durham University)
- US Social Security Administration, national baby-name data 1880-2025 (yob*.txt), team3 computation of first year recorded, US Social Security Administration (public domain)
Kaytlyn popularity since 1880
| Year | Rank (girls) | Babies (girls) |
|---|---|---|
| 2025 | #14,061 | 6 |
| 2020 | #9,912 | 10 |
| 2010 | #3,997 | 38 |
| 2000 | #1,308 | 146 |
| 1990 | #1,867 | 76 |
| 1980 | — | — |
| 1970 | — | — |
| 1960 | — | — |
| 1950 | — | — |
| 1940 | — | — |
| 1930 | — | — |
| 1920 | — | — |
| 1910 | — | — |
| 1900 | — | — |
| 1890 | — | — |
| 1880 | — | — |
How popular is Kaytlyn, counting every spelling?
Kaytlyn is a spelling of Kaitlyn, a name family that ranked #512 for girls in 2025 once every spelling is counted together, compared with #14,061 for Kaytlyn on its own. Together these spellings went to 593 girls in 2025.
| Spelling | Babies 2025 | Official rank | Babies 2021–2025 |
|---|---|---|---|
| Kaitlyn | 340 | #802 | 2,266 |
| Caitlyn | 71 | #2,492 | 502 |
| Caitlin | 78 | #2,333 | 450 |
| Kaitlynn | 41 | #3,676 | 246 |
| Kaitlin | 35 | #4,114 | 154 |
| Caitlynn | 11 | #8,971 | 55 |
| Kaytlyn | 6 | #14,061 | 53 |
| Kaytlin | — | — | 45 |
| Keitlyn | 11 | #9,166 | 35 |
Spellings count together when they sound the same in American English and are used for the same sex; nicknames and forms that sound different (such as Theo and Theodore) are kept apart. How we group spellings.
How many kids will share the name Kaytlyn?
6 of the 3,606,400 babies born in the US in 2025 were named Kaytlyn (0.00 per 1,000 births). For a girl named Kaytlyn born in 2025, the chance that another child with the same name is in a class of 20 children the same age is under 1 in 50. If every grade liked the name as much as the 2025 babies do, only about one elementary school in 1,368 (of 430 pupils) would have a child named Kaytlyn.
Shares of all registered births (NCHS); classes assumed to be children born the same year. How we estimate this.
How old are people named Kaytlyn?
About 2,700 people born in the US named Kaytlyn are alive today, with a median age of 27; half are between 21 and 31. That makes Kaytlyn mostly worn by children and young adults.
Babies given the name each year (SSA) times the share of that birth year still alive (SSA life tables). Counts people born in the US only. Method.
Kaytlyn by state
How common Kaytlyn was among girls born in each state in 2021–2025. In 49 states fewer than five girls a year got the name, too few for SSA to publish, so those states show as zero.
Names with a similar history
These names rose and fell in step with Kaytlyn: their share of US girls followed the most similar curve since 1880. If you like Kaytlyn, they share its era and feel.
Questions about the name Kaytlyn
What does Kaytlyn mean?
Kaytlyn is a spelling of Kaitlyn, usually explained as “spelling of Caitlin (Irish Catherine)”, but this is uncertain. Certainty: uncertain.
How popular is the name Kaytlyn?
Kaytlyn was the 14061st most popular name for girls in 2025, given to 6 babies. Its best year was 1995, when it ranked 1168th; the most babies were born in 1998 (158). Over the last ten years it has moved down 6,257 places. More babies were named Kaytlyn in the 1990s than in any other decade.
Is Kaytlyn a boy or girl name?
In 2021–2025, almost always a girl’s name given the name Kaytlyn in the US.
Where is Kaytlyn most popular?
In 2021–2025, Kaytlyn was most common in California (0.01 per 1,000 girls), followed by Texas and Texas.