Kaislyn
Girl name · #5223 in 2025 · Very rare
How old is the name Kaislyn? In official American birth records, Kaislyn has been tracked continuously since 2012, giving it 13 years of documented American history.
Kaislyn is currently the #5223 girl name in the United States — 25 babies received it in 2025. A decade ago it stood at #10148, so the name has been rising over the past ten years. Roughly one in every 72,000 girls born in 2025 was named Kaislyn.
Babies named Kaislyn per year. Source: Official national birth records.
The 13-year story
Kaislyn first appears in the Social Security records in 2012, when 6 girls received the name. Its peak came in 2019, when 29 girls were named Kaislyn — good for #4653 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.
Unlock the 5-year forecast and compare Kaislyn against up to 5 other names.
Uniqueness: will there be another Kaislyn in class?
On our rarity read — which blends how common Kaislyn is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Kaislyn will likely be the only one in the room, with the occasional spelling-out as the price.
Where Kaislyn is most common
State-level data for Kaislyn 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 Kaislyn
Statistically, parents drawn to Kaislyn tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Laiklyn, Kacelyn, Emerlyn, Haelyn, and Weslyn.
LaiklynKacelynEmerlynHaelynWeslynLovelynLailynRiverlyn
Rank history (last 25 years)
| Year | Babies named Kaislyn | Rank |
|---|---|---|
| 2025 | 25 | #5099 |
| 2024 | 22 | #5615 |
| 2023 | 24 | #5248 |
| 2022 | 20 | #5984 |
| 2021 | 24 | #5237 |
| 2020 | 17 | #6629 |
| 2019 | 29 | #4653 |
| 2018 | 9 | #10545 |
| 2017 | 14 | #7840 |
| 2016 | 10 | #10113 |
| 2015 | 10 | #10148 |
| 2014 | 14 | #8053 |
| 2012 | 6 | #14962 |
Frequently asked questions
How old is the name Kaislyn?
In official American birth records, the name Kaislyn first appeared in 2012 (over 13 years ago), when 6 newborn girls received the name. It has been tracked in modern national records for 13 years.
Is Kaislyn a popular girl name?
Kaislyn ranked #5223 among girls in 2025 with 25 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #10148.
When was the name Kaislyn most popular?
Kaislyn peaked in 2019, when 29 American girls received the name (ranked #4653 that year). Since 2019 the name has declined from that high.
How rare is the name Kaislyn?
In 2025, roughly 1 in 72,000 newborn American girls was named Kaislyn. 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.