Rainn
Boy name · #4124 in 2025 · Very rare
How old is the name Rainn? In official American birth records, Rainn has been tracked continuously since 2008, giving it 17 years of documented American history.
Rainn is currently the #4124 boy name in the United States — 26 babies received it in 2025. A decade ago it stood at #12086, so the name has been rising over the past ten years. Roughly one in every 69,231 boys born in 2025 was named Rainn.
Babies named Rainn per year. Source: Official national birth records.
The 17-year story
Rainn first appears in the Social Security records in 2008, when 7 boys received the name. Its peak came in 2021, when 43 boys were named Rainn — good for #2862 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 Rainn against up to 5 other names.
Uniqueness: will there be another Rainn in class?
On our rarity read — which blends how common Rainn is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Rainn will likely be the only one in the room, with the occasional spelling-out as the price.
Where Rainn is most common
State-level data for Rainn 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 Rainn
Statistically, parents drawn to Rainn tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Ripken, Revel, Romyn, Rohaan, and Ruhaan.
RipkenRevelRomynRohaanRuhaanNilanRogueRiven
Rank history (last 25 years)
| Year | Babies named Rainn | Rank |
|---|---|---|
| 2025 | 26 | #4050 |
| 2024 | 33 | #3455 |
| 2023 | 28 | #3883 |
| 2022 | 32 | #3533 |
| 2021 | 43 | #2862 |
| 2020 | 30 | #3570 |
| 2019 | 17 | #5340 |
| 2018 | 15 | #5770 |
| 2016 | 6 | #10744 |
| 2015 | 5 | #12086 |
| 2014 | 8 | #8781 |
| 2013 | 11 | #7026 |
| 2012 | 8 | #8864 |
| 2010 | 9 | #8139 |
| 2009 | 8 | #8985 |
| 2008 | 7 | #9871 |
Frequently asked questions
How old is the name Rainn?
In official American birth records, the name Rainn first appeared in 2008 (over 17 years ago), when 7 newborn boys received the name. It has been tracked in modern national records for 17 years.
Is Rainn a popular boy name?
Rainn ranked #4124 among boys in 2025 with 26 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #12086.
When was the name Rainn most popular?
Rainn peaked in 2021, when 43 American boys received the name (ranked #2862 that year). Since 2021 the name has declined from that high.
How rare is the name Rainn?
In 2025, roughly 1 in 69,231 newborn American boys was named Rainn. 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.