Westlyn
Girl name · #4653 in 2025 · Very rare
How old is the name Westlyn? In official American birth records, Westlyn has been tracked continuously since 2015, giving it 10 years of documented American history.
Westlyn is currently the #4653 girl name in the United States — 30 babies received it in 2025. A decade ago it stood at #16419, so the name has been rising over the past ten years. Roughly one in every 60,000 girls born in 2025 was named Westlyn.
The 10-year story
Westlyn first appears in the Social Security records in 2015, when 5 girls received the name. Its peak came in 2017, when 109 girls were named Westlyn — good for #1863 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 Westlyn per year. Source: Official national birth records.
Unlock the 5-year forecast and compare Westlyn against up to 5 other names.
Uniqueness: will there be another Westlyn in class?
On our rarity read — which blends how common Westlyn is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Westlyn will likely be the only one in the room, with the occasional spelling-out as the price.
Where Westlyn is most common
State-level data for Westlyn 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 Westlyn
Statistically, parents drawn to Westlyn tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Weslyn, Haelyn, Harlyn, Kaislyn, and Dawsyn.
WeslynHaelynHarlynKaislynDawsynLaiklynBrecklynAvacyn
Rank history (last 25 years)
| Year | Babies named Westlyn | Rank |
|---|---|---|
| 2025 | 30 | #4546 |
| 2024 | 10 | #9556 |
| 2023 | 18 | #6409 |
| 2022 | 27 | #4907 |
| 2021 | 39 | #3801 |
| 2020 | 37 | #3841 |
| 2019 | 53 | #3043 |
| 2018 | 101 | #1953 |
| 2017 | 109 | #1863 |
| 2016 | 24 | #5445 |
| 2015 | 5 | #16419 |
Frequently asked questions
How old is the name Westlyn?
In official American birth records, the name Westlyn first appeared in 2015 (over 10 years ago), when 5 newborn girls received the name. It has been tracked in modern national records for 10 years.
Is Westlyn a popular girl name?
Westlyn ranked #4653 among girls in 2025 with 30 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #16419.
When was the name Westlyn most popular?
Westlyn peaked in 2017, when 109 American girls received the name (ranked #1863 that year). Since 2017 the name has declined from that high.
How rare is the name Westlyn?
In 2025, roughly 1 in 60,000 newborn American girls was named Westlyn. 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.