Kaylyn
Girl name · #2523 in 2025 · Very rare
How old is the name Kaylyn? In official American birth records, Kaylyn has been tracked continuously since 1949, giving it 76 years of documented American history.
Kaylyn ranks #2523 among American girls' names as of 2025, with 70 newborns given the name that year. A decade ago it stood at #1266, so the name has been falling over the past ten years. Roughly one in every 25,714 girls born in 2025 was named Kaylyn.
The 76-year story
Kaylyn first appears in the Social Security records in 1949, when 5 girls received the name. Its peak came in 1997, when 462 girls were named Kaylyn — good for #518 that year. Today's parents encounter it on its way down the popularity curve, which for many parents is exactly the appeal. Following the curve matters more than today's snapshot: a name's position on its rise-peak-decline arc is the best predictor of how common it will feel in a kindergarten class five years from now.
Babies named Kaylyn per year. Source: Official national birth records.
Unlock the 5-year forecast and compare Kaylyn against up to 5 other names.
Uniqueness: will there be another Kaylyn in class?
On our rarity read — which blends how common Kaylyn is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Kaylyn will likely be the only one in the room, with the occasional spelling-out as the price.
Where Kaylyn is most common
State-level data for Kaylyn is too sparse in 2025 to rank by rate — in most states its count falls below the SSA's per-state reporting threshold (counts under 5 are withheld).
Names like Kaylyn
Statistically, parents drawn to Kaylyn tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Caitlyn, Katelyn, Kaitlyn, Kailyn, and Kimberlyn.
CaitlynKatelynKaitlynKailynKimberlynJailynKaelynJoslyn
Rank history (last 25 years)
| Year | Babies named Kaylyn | Rank |
|---|---|---|
| 2025 | 70 | #2514 |
| 2024 | 58 | #2857 |
| 2023 | 77 | #2352 |
| 2022 | 70 | #2530 |
| 2021 | 97 | #1991 |
| 2020 | 74 | #2376 |
| 2019 | 101 | #1941 |
| 2018 | 119 | #1727 |
| 2017 | 131 | #1643 |
| 2016 | 167 | #1394 |
| 2015 | 192 | #1266 |
| 2014 | 201 | #1215 |
| 2013 | 255 | #984 |
| 2012 | 277 | #926 |
| 2011 | 354 | #769 |
| 2010 | 356 | #769 |
| 2009 | 413 | #703 |
| 2008 | 411 | #723 |
| 2007 | 462 | #642 |
| 2006 | 409 | #693 |
| 2005 | 420 | #659 |
| 2004 | 396 | #690 |
| 2003 | 408 | #651 |
| 2002 | 430 | #600 |
| 2001 | 392 | #644 |
Frequently asked questions
How old is the name Kaylyn?
In official American birth records, the name Kaylyn first appeared in 1949 (over 76 years ago), when 5 newborn girls received the name. It has been tracked in modern national records for 76 years.
Is Kaylyn a popular girl name?
Kaylyn ranked #2523 among girls in 2025 with 70 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #1266.
When was the name Kaylyn most popular?
Kaylyn peaked in 1997, when 462 American girls received the name (ranked #518 that year). Since 1997 the name has declined from that high.
How rare is the name Kaylyn?
In 2025, roughly 1 in 25,714 newborn American girls was named Kaylyn. On our rarity scale (rarity blended with momentum) we classify it as "very rare".
Data source: Official American birth records, 1880–2025, national and state files. Counts reflect registered birth records for American families.