Irelyn
Girl name · #4419 in 2025 · Very rare
How old is the name Irelyn? In official American birth records, Irelyn has been tracked continuously since 1996, giving it 29 years of documented American history.
In 2025, 32 baby girls were named Irelyn, placing it at #4419 in the official national rankings. A decade ago it stood at #2712, so the name has been falling over the past ten years. Roughly one in every 56,250 girls born in 2025 was named Irelyn.
Babies named Irelyn per year. Source: Official national birth records.
The 29-year story
Irelyn first appears in the Social Security records in 1996, when 7 girls received the name. Its peak came in 2008, when 176 girls were named Irelyn — good for #1368 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 Irelyn against up to 5 other names.
Uniqueness: will there be another Irelyn in class?
On our rarity read — which blends how common Irelyn is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Irelyn will likely be the only one in the room, with the occasional spelling-out as the price.
Where Irelyn is most common
State-level data for Irelyn 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 Irelyn
Statistically, parents drawn to Irelyn tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Keilyn, Taylyn, Emilyn, Rilyn, and Cailyn.
KeilynTaylynEmilynRilynCailynDaelynFallynAzlyn
Rank history (last 25 years)
| Year | Babies named Irelyn | Rank |
|---|---|---|
| 2025 | 32 | #4352 |
| 2024 | 45 | #3459 |
| 2023 | 45 | #3476 |
| 2022 | 45 | #3470 |
| 2021 | 61 | #2784 |
| 2020 | 82 | #2196 |
| 2019 | 70 | #2508 |
| 2018 | 60 | #2810 |
| 2017 | 55 | #2964 |
| 2016 | 78 | #2385 |
| 2015 | 65 | #2712 |
| 2014 | 79 | #2323 |
| 2013 | 71 | #2508 |
| 2012 | 62 | #2805 |
| 2011 | 73 | #2483 |
| 2010 | 93 | #2118 |
| 2009 | 132 | #1687 |
| 2008 | 176 | #1368 |
| 2007 | 62 | #2890 |
| 2006 | 43 | #3617 |
| 2005 | 32 | #4267 |
| 2004 | 33 | #4172 |
| 2003 | 18 | #6299 |
| 2002 | 19 | #5897 |
| 2001 | 23 | #5009 |
Frequently asked questions
How old is the name Irelyn?
In official American birth records, the name Irelyn first appeared in 1996 (over 29 years ago), when 7 newborn girls received the name. It has been tracked in modern national records for 29 years.
Is Irelyn a popular girl name?
Irelyn ranked #4419 among girls in 2025 with 32 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #2712.
When was the name Irelyn most popular?
Irelyn peaked in 2008, when 176 American girls received the name (ranked #1368 that year). Since 2008 the name has declined from that high.
How rare is the name Irelyn?
In 2025, roughly 1 in 56,250 newborn American girls was named Irelyn. 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.