Cassian Boy
How popular is Cassian?
#479 boy name in 2025
633 baby boys were named Cassian in the US in 2025, making it the 479th most popular boy name.
Cassian popularity over time
Boys Girls
| Rank in 2025 | #479 for boys (▲ 138 from 2024) |
|---|---|
| Babies in 2025 | 633 boys |
| 10-year trend | Rising fast (+3232% babies vs 2015) |
| Earlier ranks | #4,888 in 2015, #1,035 in 2020 |
| Peak year | 2025 (633 boys) |
| Highest rank | #479 in 2025 |
| First recorded | 1997 |
| Boys vs girls (last 10 years) | 99% boys, 1% girls |
| Chance a classmate shares it | 0.5% in a class of 25 kids born in 2025 |
Cassian counting every spelling
Social Security counts each spelling as its own name. Adding together the spellings that sound alike, the Cassian family of names ranked #443 for boys in 2025 (#546 the year before), with 685 babies in all.
| Spelling | Boys in 2025 | Share |
|---|---|---|
| Cassian | 633 | 92% |
| Kassian | 42 | 6% |
| Kasian | 5 | 1% |
| Cassien | 5 | 1% |
Spellings are grouped by how they sound, using our own rules, so a few groupings may not match how your family says the name.
Where Cassian is most popular
Babies named Cassian per 1,000 boys born in each state, 2021 to 2025. Darker means more common.
- Oregon: 0.5 per 1,000 (37 boys)
- Nevada: 0.4 per 1,000 (25 boys)
- Washington: 0.4 per 1,000 (71 boys)
- Alaska: 0.4 per 1,000 (5 boys)
- Colorado: 0.4 per 1,000 (54 boys)
Cassian by decade
Boy names about as popular as Cassian
Questions
- Is Cassian a boy or girl name?
- Cassian is mostly a boy name. Over the last 10 years, 99% of babies named Cassian were boys.
- How popular is the name Cassian?
- 633 baby boys were named Cassian in the US in 2025, making it the 479th most popular boy name.
- When was Cassian most popular?
- Cassian peaked in 2025, when 633 boys were given the name. Its highest rank was #479 in 2025.
- How many people are named Cassian?
- 2,907 babies have been named Cassian in the US since 1880. We estimate about 2,898 of them are alive in 2026, with a median age of 3.
- Where is Cassian most popular?
- From 2021 to 2025, Cassian was most common in Oregon, at 0.5 of every 1,000 boys born there.
Source: Social Security Administration baby name data, 1880 to 2025 (names given to at least 5 babies of a sex in a year). Living-people and median-age figures are our estimates using US life tables. How we calculate.