Eilyn
Girl name · #4629 in 2025 · Very rare
How old is the name Eilyn? In official American birth records, Eilyn has been tracked continuously since 2001, giving it 24 years of documented American history.
In 2025, 30 baby girls were named Eilyn, placing it at #4629 in the official national rankings. A decade ago it stood at #8447, so the name has been rising over the past ten years. Roughly one in every 60,000 girls born in 2025 was named Eilyn.
Babies named Eilyn per year. Source: Official national birth records.
The 24-year story
Eilyn first appears in the Social Security records in 2001, when 5 girls received the name. Its all-time peak is essentially right now: 2025, with 30 babies and a rank of #4546. Names at their peak can keep climbing — or be one trend cycle from the long slide that eventually hits most popular names. 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 Eilyn against up to 5 other names.
Uniqueness: will there be another Eilyn in class?
On our rarity read — which blends how common Eilyn is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Eilyn will likely be the only one in the room, with the occasional spelling-out as the price.
Where Eilyn is most common
State-level data for Eilyn 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 Eilyn
Statistically, parents drawn to Eilyn tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Edelyn, Emerlyn, Callyn, Lailyn, and Kacelyn.
EdelynEmerlynCallynLailynKacelynMailynLaiklynEmmelyn
Rank history (last 25 years)
| Year | Babies named Eilyn | Rank |
|---|---|---|
| 2025 | 30 | #4546 |
| 2024 | 28 | #4772 |
| 2023 | 22 | #5549 |
| 2022 | 15 | #7281 |
| 2021 | 11 | #8978 |
| 2020 | 12 | #8406 |
| 2019 | 12 | #8597 |
| 2018 | 14 | #7762 |
| 2017 | 11 | #9341 |
| 2016 | 17 | #6901 |
| 2015 | 13 | #8447 |
| 2014 | 13 | #8485 |
| 2013 | 8 | #11969 |
| 2012 | 14 | #8208 |
| 2011 | 8 | #12153 |
| 2010 | 7 | #13448 |
| 2009 | 7 | #13704 |
| 2008 | 7 | #13832 |
| 2007 | 13 | #9007 |
| 2006 | 7 | #13606 |
| 2003 | 11 | #9048 |
| 2001 | 5 | #15352 |
Frequently asked questions
How old is the name Eilyn?
In official American birth records, the name Eilyn first appeared in 2001 (over 24 years ago), when 5 newborn girls received the name. It has been tracked in modern national records for 24 years.
Is Eilyn a popular girl name?
Eilyn ranked #4629 among girls in 2025 with 30 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #8447.
When was the name Eilyn most popular?
Eilyn peaked in 2025, when 30 American girls received the name (ranked #4546 that year). That peak is current — the name is at or near its all-time high right now.
How rare is the name Eilyn?
In 2025, roughly 1 in 60,000 newborn American girls was named Eilyn. 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.