Cassian
Boy name · #479 in 2025 · Uniqueness 25/100
In 2025, 633 baby boys were named Cassian, placing it at #479 in the official national rankings. A decade ago it stood at #4890, so the name has been rising over the past ten years. Roughly one in every 2,844 boys born in 2025 was named Cassian.
Babies named Cassian per year, 1880–2025. Source: SSA.
The 28-year story
Cassian first appears in the Social Security records in 1997, when 5 boys received the name. Its all-time peak is essentially right now: 2025, with 633 babies and a rank of #479. 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 Cassian against up to 5 other names.
Uniqueness: will there be another Cassian in class?
Cassian scores 25 out of 100 on our uniqueness scale, which blends current rarity with five-year momentum — putting it in the "popular" band. A low score means broad familiarity: teachers will spell it right, and your child may share it with a classmate. For many families that's a feature, not a bug.
Where Cassian is most common
Geography matters for names, and Cassian is no exception. In 2025 the states with the most Cassians were CA (123), TX (54), FL (34), NY (24), WA (22). Raw counts naturally favor populous states, but the spread still hints at where the name is part of the local naming culture.
Names like Cassian
Statistically, parents drawn to Cassian tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Cillian, Caspian, Kylian, Lian, and Chosen.
CillianCaspianKylianLianChosenCallahanChozenLucian
Rank history (last 25 years)
| Year | Babies named Cassian | Rank |
|---|---|---|
| 2025 | 633 | #479 |
| 2024 | 464 | #617 |
| 2023 | 557 | #529 |
| 2022 | 244 | #938 |
| 2021 | 230 | #968 |
| 2020 | 196 | #1035 |
| 2019 | 132 | #1354 |
| 2018 | 136 | #1328 |
| 2017 | 128 | #1378 |
| 2016 | 19 | #4943 |
| 2015 | 19 | #4890 |
| 2014 | 19 | #4866 |
| 2013 | 13 | #6241 |
| 2012 | 22 | #4390 |
| 2011 | 11 | #7009 |
| 2010 | 14 | #6036 |
| 2009 | 17 | #5334 |
| 2008 | 13 | #6393 |
| 2006 | 8 | #8732 |
| 2004 | 8 | #8143 |
| 2002 | 5 | #10667 |
| 1997 | 5 | #9265 |
Frequently asked questions
Is Cassian a popular boy name?
Cassian ranked #479 among boys in 2025 with 633 babies given the name — inside the top 500: established but not ubiquitous. Ten years earlier it ranked #4890.
When was the name Cassian most popular?
Cassian peaked in 2025, when 633 American boys received the name (ranked #479 that year). That peak is current — the name is at or near its all-time high right now.
How rare is the name Cassian?
In 2025, roughly 1 in 2,844 newborn American boys was named Cassian. It scores 25/100 on our uniqueness scale (rarity blended with momentum), which we classify as "popular".
Data source: U.S. Social Security Administration name statistics, 1880–2025, national and state files. Counts reflect Social Security card applications; names with fewer than 5 occurrences in a state-year are suppressed by the SSA.