Cass Boy
How popular is Cass?
#5,044 boy name in 2025
19 baby boys were named Cass in the US in 2025, making it the 5044th most popular boy name.
Cass popularity over time
Boys Girls
| Rank in 2025 | #5,044 for boys (▲ 193 from 2024) |
|---|---|
| Babies in 2025 | 19 boys |
| 10-year trend | Steady (-5% babies vs 2015) |
| Earlier ranks | #4,709 in 2015, #4,137 in 2020 |
| Peak year | 1989 (43 boys) |
| Highest rank | #705 in 1881 |
| First recorded | 1881 |
| Boys vs girls (last 10 years) | 98% boys, 2% girls |
| Chance a classmate shares it | 0.0% in a class of 25 kids born in 2025 |
Cass counting every spelling
Social Security counts each spelling as its own name. Adding together the spellings that sound alike, the Case family of names ranked #435 for boys in 2025 (#409 the year before), with 706 babies in all.
| Spelling | Boys in 2025 | Share |
|---|---|---|
| Case | 359 | 51% |
| Kase | 192 | 27% |
| Kaz | 30 | 4% |
| Qais | 43 | 6% |
| Kais | 32 | 5% |
| Cass | 19 | 3% |
| Kaze | 9 | 1% |
| Caz | 10 | 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 Cass is most popular
Babies named Cass per 1,000 boys born in each state, 2021 to 2025. Darker means more common.
- California: 0.0 per 1,000 (12 boys)
Cass by decade
| Decade | Baby boys | Best rank |
|---|---|---|
| 1880s | 13 | #705 |
| 1890s | 6 | #941 |
| 1900s | 17 | #966 |
| 1910s | 79 | #1,420 |
| 1920s | 81 | #2,302 |
| 1930s | 43 | #2,650 |
| 1940s | 89 | #1,758 |
| 1950s | 170 | #1,619 |
| 1960s | 222 | #1,209 |
| 1970s | 197 | #1,525 |
| 1980s | 242 | #1,761 |
| 1990s | 184 | #2,137 |
| 2000s | 162 | #4,158 |
| 2010s | 221 | #3,530 |
| 2020s | 134 | #3,360 |
Boy names about as popular as Cass
Questions
- Is Cass a boy or girl name?
- Cass is mostly a boy name. Over the last 10 years, 98% of babies named Cass were boys.
- How popular is the name Cass?
- 19 baby boys were named Cass in the US in 2025, making it the 5044th most popular boy name.
- When was Cass most popular?
- Cass peaked in 1989, when 43 boys were given the name. Its highest rank was #705 in 1881.
- How many people are named Cass?
- 1,993 babies have been named Cass in the US since 1880. We estimate about 1,574 of them are alive in 2026, with a median age of 39.
- Where is Cass most popular?
- From 2021 to 2025, Cass was most common in California, at 0.0 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.