Sion
Boy name · #2946 in 2025 · Very rare
How old is the name Sion? In official American birth records, Sion has been tracked continuously since 1912, giving it 113 years of documented American history.
Sion is currently the #2946 boy name in the United States — 42 babies received it in 2025. A decade ago it stood at #4407, so the name has been rising over the past ten years. Roughly one in every 42,857 boys born in 2025 was named Sion.
The 113-year story
Sion first appears in the Social Security records in 1912, when 5 boys received the name. Its all-time peak is essentially right now: 2022, with 43 babies and a rank of #2919. 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.
Babies named Sion per year. Source: Official national birth records.
Unlock the 5-year forecast and compare Sion against up to 5 other names.
Uniqueness: will there be another Sion in class?
On our rarity read — which blends how common Sion is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Sion will likely be the only one in the room, with the occasional spelling-out as the price.
Where Sion is most common
State-level data for Sion 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 Sion
Statistically, parents drawn to Sion tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Lion, Avion, Rion, Syon, and Xion.
LionAvionRionSyonXionKayvionZyionArion
Rank history (last 25 years)
| Year | Babies named Sion | Rank |
|---|---|---|
| 2025 | 42 | #2941 |
| 2024 | 31 | #3605 |
| 2023 | 43 | #2895 |
| 2022 | 43 | #2919 |
| 2021 | 33 | #3427 |
| 2020 | 37 | #3074 |
| 2019 | 38 | #3103 |
| 2018 | 21 | #4610 |
| 2017 | 18 | #5111 |
| 2016 | 18 | #5124 |
| 2015 | 22 | #4407 |
| 2014 | 25 | #4014 |
| 2013 | 20 | #4621 |
| 2012 | 30 | #3530 |
| 2011 | 27 | #3792 |
| 2010 | 22 | #4366 |
| 2009 | 23 | #4278 |
| 2008 | 15 | #5767 |
| 2007 | 16 | #5434 |
| 2006 | 18 | #4865 |
| 2005 | 15 | #5278 |
| 2004 | 17 | #4793 |
| 2003 | 15 | #5035 |
| 2002 | 23 | #3670 |
| 2001 | 25 | #3410 |
Frequently asked questions
How old is the name Sion?
In official American birth records, the name Sion first appeared in 1912 (over 113 years ago), when 5 newborn boys received the name. It has been tracked in modern national records for 113 years.
Is Sion a popular boy name?
Sion ranked #2946 among boys in 2025 with 42 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #4407.
When was the name Sion most popular?
Sion peaked in 2022, when 43 American boys received the name (ranked #2919 that year). That peak is current — the name is at or near its all-time high right now.
How rare is the name Sion?
In 2025, roughly 1 in 42,857 newborn American boys was named Sion. 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.