Keilyn
Girl name · #4602 in 2025 · Very rare
How old is the name Keilyn? In official American birth records, Keilyn has been tracked continuously since 1988, giving it 37 years of documented American history.
In 2025, 30 baby girls were named Keilyn, placing it at #4602 in the official national rankings. A decade ago it stood at #3429, so the name has been falling over the past ten years. Roughly one in every 60,000 girls born in 2025 was named Keilyn.
The 37-year story
Keilyn first appears in the Social Security records in 1988, when 6 girls received the name. Its peak came in 2009, when 63 girls were named Keilyn — good for #2800 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 Keilyn per year. Source: Official national birth records.
Unlock the 5-year forecast and compare Keilyn against up to 5 other names.
Uniqueness: will there be another Keilyn in class?
On our rarity read — which blends how common Keilyn is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Keilyn will likely be the only one in the room, with the occasional spelling-out as the price.
Where Keilyn is most common
State-level data for Keilyn 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 Keilyn
Statistically, parents drawn to Keilyn tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Taylyn, Irelyn, Emilyn, Daelyn, and Skylyn.
TaylynIrelynEmilynDaelynSkylynFallynRilynRozlyn
Rank history (last 25 years)
| Year | Babies named Keilyn | Rank |
|---|---|---|
| 2025 | 30 | #4546 |
| 2024 | 46 | #3395 |
| 2023 | 49 | #3274 |
| 2022 | 46 | #3416 |
| 2021 | 51 | #3157 |
| 2020 | 56 | #2890 |
| 2019 | 45 | #3451 |
| 2018 | 39 | #3789 |
| 2017 | 38 | #3919 |
| 2016 | 49 | #3280 |
| 2015 | 46 | #3429 |
| 2014 | 50 | #3226 |
| 2013 | 37 | #4002 |
| 2012 | 57 | #2978 |
| 2011 | 62 | #2796 |
| 2010 | 60 | #2870 |
| 2009 | 63 | #2800 |
| 2008 | 43 | #3710 |
| 2007 | 60 | #2964 |
| 2006 | 42 | #3669 |
| 2005 | 31 | #4373 |
| 2004 | 26 | #4949 |
| 2003 | 20 | #5795 |
| 2002 | 30 | #4179 |
| 2001 | 23 | #5009 |
Frequently asked questions
How old is the name Keilyn?
In official American birth records, the name Keilyn first appeared in 1988 (over 37 years ago), when 6 newborn girls received the name. It has been tracked in modern national records for 37 years.
Is Keilyn a popular girl name?
Keilyn ranked #4602 among girls in 2025 with 30 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #3429.
When was the name Keilyn most popular?
Keilyn peaked in 2009, when 63 American girls received the name (ranked #2800 that year). Since 2009 the name has declined from that high.
How rare is the name Keilyn?
In 2025, roughly 1 in 60,000 newborn American girls was named Keilyn. 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.