Cass
Cass was the 5068th most popular name for boys in 2025, given to 19 babies. Its best year was 1881, when it ranked 719th; the most babies were born in 1989 (43). Over the last ten years it has moved down 324 places. More babies were named Cass in the 1980s than in any other decade.
Meaning Not yet researched how we research meanings
- Rank in 2025
- #5,068 boys, down 906 places since 2020
- Babies in 2025
- 19boys
- Girls and boys
- Almost always a boy’s name2021–2025
- Peak year
- 198943 babies
- Total since 1880
- 1,993babies recorded
Cass popularity since 1880
A few girls are given the name too: 133 since 1949.
| Year | Rank (boys) | Babies (boys) |
|---|---|---|
| 2025 | #5,068 | 19 |
| 2020 | #4,162 | 24 |
| 2010 | #3,547 | 30 |
| 2000 | #4,426 | 17 |
| 1990 | #2,378 | 29 |
| 1980 | #3,119 | 14 |
| 1970 | #1,709 | 26 |
| 1960 | #1,211 | 42 |
| 1950 | #2,231 | 12 |
| 1940 | #3,182 | 6 |
| 1930 | #4,082 | 5 |
| 1920 | #3,892 | 6 |
| 1910 | #1,447 | 6 |
| 1900 | #1,347 | 5 |
| 1890 | — | — |
| 1880 | — | — |
How popular is Cass, counting every spelling?
Cass is the most common spelling of a name family that had 19 boys in 2025 across its spellings. Together these spellings went to 19 boys in 2025.
| Spelling | Babies 2025 | Official rank | Babies 2021–2025 |
|---|---|---|---|
| Cass | 19 | #5,068 | 110 |
| Cas | — | — | 33 |
Spellings count together when they sound the same in American English and are used for the same sex; nicknames and forms that sound different (such as Theo and Theodore) are kept apart. How we group spellings.
How many kids will share the name Cass?
19 of the 3,606,400 babies born in the US in 2025 were named Cass (0.01 per 1,000 births). For a boy named Cass born in 2025, the chance that another child with the same name is in a class of 20 children the same age is under 1 in 50. If every grade liked the name as much as the 2025 babies do, only about one elementary school in 439 (of 430 pupils) would have a child named Cass.
Shares of all registered births (NCHS); classes assumed to be children born the same year. How we estimate this.
How old are people named Cass?
About 1,400 people born in the US named Cass are alive today, with a median age of 37; half are between 17 and 56. That makes Cass mostly worn by adults in their thirties to fifties. The wide spread shows a name popular in two different eras.
Babies given the name each year (SSA) times the share of that birth year still alive (SSA life tables). Counts people born in the US only. Method.
Cass by state
How common Cass was among boys born in each state in 2021–2025. In 50 states fewer than five boys a year got the name, too few for SSA to publish, so those states show as zero.
Names with a similar history
These names rose and fell in step with Cass: their share of US boys followed the most similar curve since 1880. If you like Cass, they share its era and feel.
Cass is also a nickname for Cassidy, Cassius, Cassandra and Cassian.
Questions about the name Cass
How popular is the name Cass?
Cass was the 5068th most popular name for boys in 2025, given to 19 babies. Its best year was 1881, when it ranked 719th; the most babies were born in 1989 (43). Over the last ten years it has moved down 324 places. More babies were named Cass in the 1980s than in any other decade.
Is Cass a boy or girl name?
In 2021–2025, almost always a boy’s name given the name Cass in the US.
Where is Cass most popular?
In 2021–2025, Cass was most common in California (0.01 per 1,000 boys).